Re: [PATCH] Staging: ccree: Don't use volatile for monitor_lock

From: Greg KH
Date: Mon Sep 11 2017 - 12:04:55 EST


On Mon, Sep 11, 2017 at 09:29:31PM +0530, Srishti Sharma wrote:
> The use of volatile for the variable monitor_lock is unnecessary.
>
> Signed-off-by: Srishti Sharma <srishtishar@xxxxxxxxx>
> ---
> drivers/staging/ccree/ssi_request_mgr.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/ccree/ssi_request_mgr.c b/drivers/staging/ccree/ssi_request_mgr.c
> index e5c2f92..7d77941 100644
> --- a/drivers/staging/ccree/ssi_request_mgr.c
> +++ b/drivers/staging/ccree/ssi_request_mgr.c
> @@ -49,7 +49,7 @@ struct ssi_request_mgr_handle {
> dma_addr_t dummy_comp_buff_dma;
> struct cc_hw_desc monitor_desc;
>
> - volatile unsigned long monitor_lock;
> + unsigned long monitor_lock;

While volatile is not right, odds are, this is still totally wrong as
well. How about using a "real" lock instead?

thanks,

greg k-h