media: stkwebcam: Bugfix for wrong return values
usb_control_msg returns in case of a successfully sent message the number of sent bytes as a positive number. Don't use this value as a return value for stk_camera_read_reg, as a non-zero return value is used as an error condition in some cases when stk_camera_read_reg is called. Signed-off-by: Andreas Pape <ap@ca-pape.de> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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@ -171,7 +171,11 @@ int stk_camera_read_reg(struct stk_camera *dev, u16 index, u8 *value)
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*value = *buf;
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kfree(buf);
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return ret;
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if (ret < 0)
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return ret;
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else
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return 0;
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}
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static int stk_start_stream(struct stk_camera *dev)
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