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usb: usbtest: reduce stack usage in test_queue 

Fix the warning: [-Werror=-Wframe-larger-than=]

drivers/usb/misc/usbtest.c: In function 'test_queue':
drivers/usb/misc/usbtest.c:2148:1:
warning: the frame size of 1232 bytes is larger than 1024 bytes

Reported-by: kbuild test robot <lkp@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Link: https://lore.kernel.org/r/ffa85702-86ab-48d7-4da2-2efcc94b05d3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bixuan Cui 2020-07-17 08:22:53 +08:00 committed by Greg Kroah-Hartman
parent 6e1c2241f4
commit a482766d00
1 changed files with 9 additions and 1 deletions
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10
drivers/usb/misc/usbtest.c
View File

@ -2043,7 +2043,7 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param,
unsigned i;
unsigned long packets = 0;
int status = 0;
struct urb *urbs[MAX_SGLEN];
struct urb **urbs;
if (!param->sglen || param->iterations > UINT_MAX / param->sglen)
return -EINVAL;
@ -2051,6 +2051,10 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param,
if (param->sglen > MAX_SGLEN)
return -EINVAL;
urbs = kcalloc(param->sglen, sizeof(*urbs), GFP_KERNEL);
if (!urbs)
return -ENOMEM;
memset(&context, 0, sizeof(context));
context.count = param->iterations * param->sglen;
context.dev = dev;
@ -2137,6 +2141,8 @@ test_queue(struct usbtest_dev *dev, struct usbtest_param_32 *param,
else if (context.errors >
(context.is_iso ? context.packet_count / 10 : 0))
status = -EIO;
kfree(urbs);
return status;
fail:
@ -2144,6 +2150,8 @@ fail:
if (urbs[i])
simple_free_urb(urbs[i]);
}
kfree(urbs);
return status;
}