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Staging: hv: mousevsc: Handle the case where we may get bogus report desc size

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Handle the case where we may get bogus report desc size from the host.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
K. Y. Srinivasan
2011-09-29 11:54:45 -07:00
committed by Greg Kroah-Hartman
parent 01584892db
commit 60e8615ad6
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/hv/hv_mouse.c
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@@ -341,6 +341,8 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
/* Save the report desc */
input_device->report_desc_size = desc->desc[0].wDescriptorLength;
if (input_device->report_desc_size == 0)
goto cleanup;
input_device->report_desc = kzalloc(input_device->report_desc_size,
GFP_ATOMIC);