[PATCH] nvmem: meson-efuse: Fix return value of nvmem callbacks

[Dan Carpenter]

On Tue, Jun 11, 2024 at 02:55:24PM +0000, Joy Chakraborty wrote:
> Read/write callbacks registered with nvmem core expect 0 to be returned
> on success and a negative value to be returned on failure.
> 
> meson_efuse_read() and meson_efuse_write() call into
> meson_sm_call_read() and meson_sm_call_write() respectively which return
> the number of bytes read or written on success as per their api
> description.
> 
> Fix to return error if meson_sm_call_read()/meson_sm_call_write()
> returns an error else return 0.
> 
> Fixes: a29a63bdaf6f ("nvmem: meson-efuse: simplify read callback")
> Cc: stable at vger.kernel.org
> Signed-off-by: Joy Chakraborty <joychakr at google.com>

Thanks!

Reviewed-by: Dan Carpenter <dan.carpenter at linaro.org>

regards,
dan carpenter