RE: [PATCH 08/10] soc: fujitsu: hwb: Add release operation
From: misono.tomohiro@fujitsu.com <hidden>
Date: 2021-01-12 10:41:24
On Fri, Jan 8, 2021 at 11:52 AM Misono Tomohiro [off-list ref] wrote:quoted
Upon release, we cleanup remaining resources/registers if necessary. This happens when user does not call IOC_BB_FREE properly and the function will do effectively the same operation as IOC_BB_FREE. Signed-off-by: Misono Tomohiro <redacted>What is the benefit of calling IOC_BB_FREE instead of always relying on close() to do this? Would it be easier to just not implement IOC_BB_FREE?
This is up to applications. When the application want to reuse barrier driver resource with diffent barrier settings (i.e. when changing which PEs joinining synchronization), it can use IOC_BB_FREE rather than close and open device file again. Regards, Tomohiro _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel