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

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Message-ID: <b730de08-6d92-4667-810a-613d5f2855b8@moroto.mountain>
Date: Tue, 11 Jun 2024 18:28:51 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Joy Chakraborty <joychakr@...gle.com>
Cc: Jerome Brunet <jbrunet@...libre.com>,
	Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: Re: [PATCH] nvmem: meson-efuse: Fix return value of nvmem callbacks

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@...r.kernel.org
> Signed-off-by: Joy Chakraborty <joychakr@...gle.com>

Thanks!

Reviewed-by: Dan Carpenter <dan.carpenter@...aro.org>

regards,
dan carpenter