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usbnet: fix memory allocation in helpers

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commit e65af5403e462ccd7dff6a045a886c64da598c2e upstream.

usbnet provides some helper functions that are also used in
the context of reset() operations. During a reset the other
drivers on a device are unable to operate. As that can be block
drivers, a driver for another interface cannot use paging
in its memory allocations without risking a deadlock.
Use GFP_NOIO in the helpers.

Fixes: 877bd862f32b8 ("usbnet: introduce usbnet 3 command helpers")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20220628093517.7469-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2022-06-28 11:35:17 +02:00 committed by Greg Kroah-Hartman
parent 51e04827bb
commit de39372048
1 changed files with 2 additions and 2 deletions
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4
drivers/net/usb/usbnet.c
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@ -2002,7 +2002,7 @@ static int __usbnet_read_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
cmd, reqtype, value, index, size); cmd, reqtype, value, index, size);
if (size) { if (size) {
buf = kmalloc(size, GFP_KERNEL); buf = kmalloc(size, GFP_NOIO);
if (!buf) if (!buf)
goto out; goto out;
} }
@ -2034,7 +2034,7 @@ static int __usbnet_write_cmd(struct usbnet *dev, u8 cmd, u8 reqtype,
cmd, reqtype, value, index, size); cmd, reqtype, value, index, size);
if (data) { if (data) {
buf = kmemdup(data, size, GFP_KERNEL); buf = kmemdup(data, size, GFP_NOIO);
if (!buf) if (!buf)
goto out; goto out;
} else { } else {