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ramips: backport upstream mt762x PCIe driver error log fixes

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These patches silence some mt762x PCIe driver error messeges by removing
the useless debugging codes and replacing incorrectly used 'dev_err()'
with 'dev_info()':

PCI: mt7621: Use dev_info() to log PCIe card detection [1]
mips: pci-mt7620: do not print NFTS register value as error log [2]
mips: pci-mt7620: use dev_info() to log PCIe device detection result [3]

Patch [1] has already been merged into the Linux 6.3 branch. Patches [2] and
[3] have been merged into the "mips-next" tree, and they will be part of the
upcoming Linux 6.5.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v6.4-rc7&id=50233e105a0332ec0f3bc83180c416e6b200471e
[2] https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/commit/?id=9f9a035e6156a57d9da062b26d2a48d031744a1e
[3] https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/commit/?id=89ec9bbe60b61cc6ae3eddd6d4f43e128f8a88de

Signed-off-by: Shiji Yang <yangshiji66@qq.com>
(cherry picked from commit 4e74777fa8)
This commit is contained in:
Shiji Yang 2023-06-22 00:32:32 +08:00 committed by Hauke Mehrtens
parent 9d15baee6b
commit 3ac300c753
3 changed files with 102 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
target/linux/ramips/patches-5.15/010-v6.5-01-mips-pci-mt7620-do-not-print-NFTS-register-value-as-.patch Normal file
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@ -0,0 +1,32 @@
From 9f9a035e6156a57d9da062b26d2a48d031744a1e Mon Sep 17 00:00:00 2001
From: Shiji Yang <yangshiji66@outlook.com>
Date: Tue, 20 Jun 2023 18:43:22 +0800
Subject: [PATCH 1/2] mips: pci-mt7620: do not print NFTS register value as
error log
These codes are used to read NFTS_TIMEOUT_DELAY register value and
write it into kernel log after writing the register. they are only
used for debugging during driver development, so there is no need
to keep them now.
Tested on MT7628AN router Motorola MWR03.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
arch/mips/pci/pci-mt7620.c | 3 ---
1 file changed, 3 deletions(-)
--- a/arch/mips/pci/pci-mt7620.c
+++ b/arch/mips/pci/pci-mt7620.c
@@ -274,9 +274,6 @@ static int mt7628_pci_hw_init(struct pla
val |= 0x50 << 8;
pci_config_write(NULL, 0, 0x70c, 4, val);
- pci_config_read(NULL, 0, 0x70c, 4, &val);
- dev_err(&pdev->dev, "Port 0 N_FTS = %x\n", (unsigned int) val);
-
return 0;
}

39
target/linux/ramips/patches-5.15/010-v6.5-02-mips-pci-mt7620-use-dev_info-to-log-PCIe-device-dete.patch Normal file
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@ -0,0 +1,39 @@
From 89ec9bbe60b61cc6ae3eddd6d4f43e128f8a88de Mon Sep 17 00:00:00 2001
From: Shiji Yang <yangshiji66@outlook.com>
Date: Tue, 20 Jun 2023 18:43:23 +0800
Subject: [PATCH 2/2] mips: pci-mt7620: use dev_info() to log PCIe device
detection result
Usually, We only need to print the error log when there is a PCIe card but
initialization fails. Whether the driver finds the PCIe card or not is the
expected behavior. So it's better to log these information with dev_info().
Tested on MT7628AN router Motorola MWR03.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
arch/mips/pci/pci-mt7620.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/mips/pci/pci-mt7620.c
+++ b/arch/mips/pci/pci-mt7620.c
@@ -331,7 +331,7 @@ static int mt7620_pci_probe(struct platf
rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
if (ralink_soc == MT762X_SOC_MT7620A)
rt_sysc_m32(LC_CKDRVPD, PDRV_SW_SET, PPLL_DRV);
- dev_err(&pdev->dev, "PCIE0 no card, disable it(RST&CLK)\n");
+ dev_info(&pdev->dev, "PCIE0 no card, disable it(RST&CLK)\n");
return -1;
}
@@ -374,7 +374,7 @@ int pcibios_map_irq(const struct pci_dev
dev->bus->number, slot);
return 0;
}
- dev_err(&dev->dev, "card - bus=0x%x, slot = 0x%x irq=%d\n",
+ dev_info(&dev->dev, "card - bus=0x%x, slot = 0x%x irq=%d\n",
dev->bus->number, slot, irq);
/* configure the cache line size to 0x14 */

31
target/linux/ramips/patches-5.15/110-v6.4-PCI-mt7621-Use-dev_info-to-log-PCIe-card-detection.patch Normal file
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@ -0,0 +1,31 @@
From 50233e105a0332ec0f3bc83180c416e6b200471e Mon Sep 17 00:00:00 2001
From: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Date: Fri, 24 Mar 2023 08:37:33 +0100
Subject: PCI: mt7621: Use dev_info() to log PCIe card detection
When there is no card plugged on a PCIe port a log reporting that
the port will be disabled is flagged as an error (dev_err()).
Since this is not an error at all, change the log level by using
dev_info() instead.
Link: https://lore.kernel.org/r/20230324073733.1596231-1-sergio.paracuellos@gmail.com
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
---
drivers/pci/controller/pcie-mt7621.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/pci/controller/pcie-mt7621.c
+++ b/drivers/pci/controller/pcie-mt7621.c
@@ -383,8 +383,8 @@ static int mt7621_pcie_init_ports(struct
u32 slot = port->slot;
if (!mt7621_pcie_port_is_linkup(port)) {
- dev_err(dev, "pcie%d no card, disable it (RST & CLK)\n",
- slot);
+ dev_info(dev, "pcie%d no card, disable it (RST & CLK)\n",
+ slot);
mt7621_control_assert(port);
port->enabled = false;
num_disabled++;