mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-19 21:58:04 +00:00
kernel: fix arch-dependent bug in hso module
Currently, the module causes an oops at least on rt5350. These patches have been accepted upstream at: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> SVN-Revision: 37931
This commit is contained in:
Felix Fietkau
parent
7198523e6e
commit
11926c2fd8
@ -0,0 +1,45 @@
|
||||
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:07 -0700
|
||||
Subject: [PATCH 1/2] hso: Earlier catch of error condition
|
||||
|
||||
There is no need to get an interface specification if we know it's the
|
||||
wrong one.
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 9 +++++----
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index cba1d46..5fb36ed 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
|
||||
struct hso_shared_int *shared_int;
|
||||
struct hso_device *tmp_dev = NULL;
|
||||
|
||||
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
+ dev_err(&interface->dev, "Not our interface\n");
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
|
||||
/* Get the interface/port specification from either driver_info or from
|
||||
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
|
||||
else
|
||||
port_spec = hso_get_config_data(interface);
|
||||
|
||||
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
- dev_err(&interface->dev, "Not our interface\n");
|
||||
- return -ENODEV;
|
||||
- }
|
||||
/* Check if we need to switch to alt interfaces prior to port
|
||||
* configuration */
|
||||
if (interface->num_altsetting > 1)
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,53 @@
|
||||
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:19 -0700
|
||||
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
|
||||
|
||||
As Sergei Shtylyov explained in the #mipslinux IRC channel:
|
||||
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
|
||||
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
|
||||
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
|
||||
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
|
||||
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
|
||||
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 6 +++++-
|
||||
1 file changed, 5 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index 5fb36ed..86292e6 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2816,13 +2816,16 @@ exit:
|
||||
static int hso_get_config_data(struct usb_interface *interface)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
- u8 config_data[17];
|
||||
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
|
||||
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
s32 result;
|
||||
|
||||
+ if (!config_data)
|
||||
+ return -ENOMEM;
|
||||
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
||||
0x86, 0xC0, 0, 0, config_data, 17,
|
||||
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
||||
+ kfree(config_data);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
|
||||
if (config_data[16] & 0x1)
|
||||
result |= HSO_INFO_CRC_BUG;
|
||||
|
||||
+ kfree(config_data);
|
||||
return result;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,45 @@
|
||||
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:07 -0700
|
||||
Subject: [PATCH 1/2] hso: Earlier catch of error condition
|
||||
|
||||
There is no need to get an interface specification if we know it's the
|
||||
wrong one.
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 9 +++++----
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index cba1d46..5fb36ed 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
|
||||
struct hso_shared_int *shared_int;
|
||||
struct hso_device *tmp_dev = NULL;
|
||||
|
||||
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
+ dev_err(&interface->dev, "Not our interface\n");
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
|
||||
/* Get the interface/port specification from either driver_info or from
|
||||
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
|
||||
else
|
||||
port_spec = hso_get_config_data(interface);
|
||||
|
||||
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
- dev_err(&interface->dev, "Not our interface\n");
|
||||
- return -ENODEV;
|
||||
- }
|
||||
/* Check if we need to switch to alt interfaces prior to port
|
||||
* configuration */
|
||||
if (interface->num_altsetting > 1)
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,53 @@
|
||||
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:19 -0700
|
||||
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
|
||||
|
||||
As Sergei Shtylyov explained in the #mipslinux IRC channel:
|
||||
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
|
||||
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
|
||||
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
|
||||
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
|
||||
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
|
||||
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 6 +++++-
|
||||
1 file changed, 5 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index 5fb36ed..86292e6 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2816,13 +2816,16 @@ exit:
|
||||
static int hso_get_config_data(struct usb_interface *interface)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
- u8 config_data[17];
|
||||
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
|
||||
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
s32 result;
|
||||
|
||||
+ if (!config_data)
|
||||
+ return -ENOMEM;
|
||||
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
||||
0x86, 0xC0, 0, 0, config_data, 17,
|
||||
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
||||
+ kfree(config_data);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
|
||||
if (config_data[16] & 0x1)
|
||||
result |= HSO_INFO_CRC_BUG;
|
||||
|
||||
+ kfree(config_data);
|
||||
return result;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,45 @@
|
||||
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:07 -0700
|
||||
Subject: [PATCH 1/2] hso: Earlier catch of error condition
|
||||
|
||||
There is no need to get an interface specification if we know it's the
|
||||
wrong one.
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 9 +++++----
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index cba1d46..5fb36ed 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
|
||||
struct hso_shared_int *shared_int;
|
||||
struct hso_device *tmp_dev = NULL;
|
||||
|
||||
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
+ dev_err(&interface->dev, "Not our interface\n");
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
|
||||
/* Get the interface/port specification from either driver_info or from
|
||||
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
|
||||
else
|
||||
port_spec = hso_get_config_data(interface);
|
||||
|
||||
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
- dev_err(&interface->dev, "Not our interface\n");
|
||||
- return -ENODEV;
|
||||
- }
|
||||
/* Check if we need to switch to alt interfaces prior to port
|
||||
* configuration */
|
||||
if (interface->num_altsetting > 1)
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,53 @@
|
||||
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:19 -0700
|
||||
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
|
||||
|
||||
As Sergei Shtylyov explained in the #mipslinux IRC channel:
|
||||
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
|
||||
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
|
||||
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
|
||||
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
|
||||
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
|
||||
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 6 +++++-
|
||||
1 file changed, 5 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index 5fb36ed..86292e6 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2816,13 +2816,16 @@ exit:
|
||||
static int hso_get_config_data(struct usb_interface *interface)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
- u8 config_data[17];
|
||||
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
|
||||
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
s32 result;
|
||||
|
||||
+ if (!config_data)
|
||||
+ return -ENOMEM;
|
||||
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
||||
0x86, 0xC0, 0, 0, config_data, 17,
|
||||
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
||||
+ kfree(config_data);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
|
||||
if (config_data[16] & 0x1)
|
||||
result |= HSO_INFO_CRC_BUG;
|
||||
|
||||
+ kfree(config_data);
|
||||
return result;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,45 @@
|
||||
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:07 -0700
|
||||
Subject: [PATCH 1/2] hso: Earlier catch of error condition
|
||||
|
||||
There is no need to get an interface specification if we know it's the
|
||||
wrong one.
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 9 +++++----
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index cba1d46..5fb36ed 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
|
||||
struct hso_shared_int *shared_int;
|
||||
struct hso_device *tmp_dev = NULL;
|
||||
|
||||
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
+ dev_err(&interface->dev, "Not our interface\n");
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
|
||||
/* Get the interface/port specification from either driver_info or from
|
||||
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
|
||||
else
|
||||
port_spec = hso_get_config_data(interface);
|
||||
|
||||
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
- dev_err(&interface->dev, "Not our interface\n");
|
||||
- return -ENODEV;
|
||||
- }
|
||||
/* Check if we need to switch to alt interfaces prior to port
|
||||
* configuration */
|
||||
if (interface->num_altsetting > 1)
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,53 @@
|
||||
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:19 -0700
|
||||
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
|
||||
|
||||
As Sergei Shtylyov explained in the #mipslinux IRC channel:
|
||||
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
|
||||
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
|
||||
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
|
||||
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
|
||||
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
|
||||
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 6 +++++-
|
||||
1 file changed, 5 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index 5fb36ed..86292e6 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2816,13 +2816,16 @@ exit:
|
||||
static int hso_get_config_data(struct usb_interface *interface)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
- u8 config_data[17];
|
||||
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
|
||||
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
s32 result;
|
||||
|
||||
+ if (!config_data)
|
||||
+ return -ENOMEM;
|
||||
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
||||
0x86, 0xC0, 0, 0, config_data, 17,
|
||||
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
||||
+ kfree(config_data);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
|
||||
if (config_data[16] & 0x1)
|
||||
result |= HSO_INFO_CRC_BUG;
|
||||
|
||||
+ kfree(config_data);
|
||||
return result;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,45 @@
|
||||
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:07 -0700
|
||||
Subject: [PATCH 1/2] hso: Earlier catch of error condition
|
||||
|
||||
There is no need to get an interface specification if we know it's the
|
||||
wrong one.
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 9 +++++----
|
||||
1 file changed, 5 insertions(+), 4 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index cba1d46..5fb36ed 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
|
||||
struct hso_shared_int *shared_int;
|
||||
struct hso_device *tmp_dev = NULL;
|
||||
|
||||
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
+ dev_err(&interface->dev, "Not our interface\n");
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+
|
||||
if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
|
||||
/* Get the interface/port specification from either driver_info or from
|
||||
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
|
||||
else
|
||||
port_spec = hso_get_config_data(interface);
|
||||
|
||||
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
|
||||
- dev_err(&interface->dev, "Not our interface\n");
|
||||
- return -ENODEV;
|
||||
- }
|
||||
/* Check if we need to switch to alt interfaces prior to port
|
||||
* configuration */
|
||||
if (interface->num_altsetting > 1)
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
@ -0,0 +1,53 @@
|
||||
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
|
||||
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Date: Wed, 21 Aug 2013 01:43:19 -0700
|
||||
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
|
||||
|
||||
As Sergei Shtylyov explained in the #mipslinux IRC channel:
|
||||
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
|
||||
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
|
||||
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
|
||||
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
|
||||
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
|
||||
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
|
||||
|
||||
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
|
||||
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||||
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||||
---
|
||||
drivers/net/usb/hso.c | 6 +++++-
|
||||
1 file changed, 5 insertions(+), 1 deletion(-)
|
||||
|
||||
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
|
||||
index 5fb36ed..86292e6 100644
|
||||
--- a/drivers/net/usb/hso.c
|
||||
+++ b/drivers/net/usb/hso.c
|
||||
@@ -2816,13 +2816,16 @@ exit:
|
||||
static int hso_get_config_data(struct usb_interface *interface)
|
||||
{
|
||||
struct usb_device *usbdev = interface_to_usbdev(interface);
|
||||
- u8 config_data[17];
|
||||
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
|
||||
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
|
||||
s32 result;
|
||||
|
||||
+ if (!config_data)
|
||||
+ return -ENOMEM;
|
||||
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
|
||||
0x86, 0xC0, 0, 0, config_data, 17,
|
||||
USB_CTRL_SET_TIMEOUT) != 0x11) {
|
||||
+ kfree(config_data);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
|
||||
if (config_data[16] & 0x1)
|
||||
result |= HSO_INFO_CRC_BUG;
|
||||
|
||||
+ kfree(config_data);
|
||||
return result;
|
||||
}
|
||||
|
||||
--
|
||||
1.7.9.5
|
||||
|
||||
Loading…
Reference in New Issue
Block a user