mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-21 06:33:31 +00:00
c05d4e5b49
USB devio splits large transaction into 16 KiB buffers in scatter-gather lists. Unfortunately, this mechanism seems unreliable most certainly because of issue #4809 "DDE Linux struct page object aliasing". Issue #5036
16 lines
610 B
Diff
16 lines
610 B
Diff
USB devio splits large transaction into 16 KiB buffers in scatter-gather
|
|
lists. Unfortunately, this mechanism seems unreliable most certainly because
|
|
of issue #4809 "DDE Linux struct page object aliasing".
|
|
|
|
--- src/linux/drivers/usb/core/devio.c
|
|
+++ src/linux/drivers/usb/core/devio.c
|
|
@@ -53,7 +53,7 @@
|
|
|
|
#define USB_MAXBUS 64
|
|
#define USB_DEVICE_MAX (USB_MAXBUS * 128)
|
|
-#define USB_SG_SIZE 16384 /* split-size for large txs */
|
|
+#define USB_SG_SIZE (1024 * 1024) /* split-size for large txs */
|
|
|
|
/* Mutual exclusion for ps->list in resume vs. release and remove */
|
|
static DEFINE_MUTEX(usbfs_mutex);
|