From: Johan Korsnes jkorsnes@cisco.com
commit 84a4062632462c4320704fcdf8e99e89e94c0aba upstream.
We have a HID touch device that reports its opens and shorts test results in HID buffers of size 8184 bytes. The maximum size of the HID buffer is currently set to 4096 bytes, causing probe of this device to fail. With this patch we increase the maximum size of the HID buffer to 8192 bytes, making device probe and acquisition of said buffers succeed.
Signed-off-by: Johan Korsnes jkorsnes@cisco.com Cc: Alan Stern stern@rowland.harvard.edu Cc: Armando Visconti armando.visconti@st.com Cc: Jiri Kosina jkosina@suse.cz Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/linux/hid.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/hid.h b/include/linux/hid.h index 8b3e5e8..8506637 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -495,7 +495,7 @@ struct hid_report_enum { };
#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ -#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ +#define HID_MAX_BUFFER_SIZE 8192 /* 8kb */ #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ #define HID_OUTPUT_FIFO_SIZE 64