Re: [PATCH] media: hantro: Avoid global variable for jpeg quantization tables
From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Date: 2021-11-17 10:58:40
Also in:
linux-arm-kernel, linux-media, linux-rockchip, lkml
Hi James, Thanks for the patch. On Thu, Nov 11, 2021 at 10:01:08PM +0000, James Cowgill wrote:
On a system with multiple encoders present, it's possible for two encoders to write to the global luma and chroma quantization tables at the same time if they both submit a JPEG frame to be encoded. Avoid this race by moving the tables into the `jpeg_ctx` structure which is stored on the stack. Signed-off-by: James Cowgill <james.cowgill@blaize.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>