[PATCH] tools: env: return error if ubi_update_start() fails

[Tom Rini]

On Mon, Nov 30, 2020 at 12:11:32PM +0100, Martin Hundebøll wrote:

> The UBI_IOCVOLUP ioctl can fail if exclusive access to the volume isn't
> obtained. If this happens, the flush operation doesn't return error,
> leaving the caller without knowledge of missing flush.
> 
> Fix this by forwarding the error (-1) from ubi_update_start().
> 
> Fixes: 34255b92e6e ("tools: env: Add support for direct read/write UBI volumes")
> Signed-off-by: Martin Hundebøll <martin at geanix.com>

Applied to u-boot/master, thanks!

-- 
Tom
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