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