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[86.58.6.171]) by smtp.gmail.com with ESMTPSA id w17-20020a05600c475100b004162d06768bsm35189838wmo.21.2024.04.26.08.37.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Apr 2024 08:37:43 -0700 (PDT) From: Jernej =?utf-8?B?xaBrcmFiZWM=?= To: Samuel Holland , Andy Shevchenko , linux-leds@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Andy Shevchenko Cc: Pavel Machek , Lee Jones , Chen-Yu Tsai Subject: Re: [PATCH v1 1/1] leds: sun50i-a100: Use match_string() helper to simplify the code Date: Fri, 26 Apr 2024 17:37:42 +0200 Message-ID: <3557566.iIbC2pHGDl@jernej-laptop> In-Reply-To: <20240426152515.872917-1-andriy.shevchenko@linux.intel.com> References: <20240426152515.872917-1-andriy.shevchenko@linux.intel.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Dne petek, 26. april 2024 ob 17:25:15 GMT +2 je Andy Shevchenko napisal(a): > match_string() returns the array index of a matching string. > Use it instead of the open-coded implementation. > > Signed-off-by: Andy Shevchenko > --- > drivers/leds/leds-sun50i-a100.c | 14 ++++++-------- > 1 file changed, 6 insertions(+), 8 deletions(-) > > diff --git a/drivers/leds/leds-sun50i-a100.c b/drivers/leds/leds-sun50i-a100.c > index 62d21c3a3575..119eff9471f0 100644 > --- a/drivers/leds/leds-sun50i-a100.c > +++ b/drivers/leds/leds-sun50i-a100.c > @@ -252,18 +252,16 @@ static int sun50i_a100_ledc_parse_format(struct device *dev, > struct sun50i_a100_ledc *priv) > { > const char *format = "grb"; > - u32 i; > + int i; > > device_property_read_string(dev, "allwinner,pixel-format", &format); > > - for (i = 0; i < ARRAY_SIZE(sun50i_a100_ledc_formats); i++) { > - if (!strcmp(format, sun50i_a100_ledc_formats[i])) { > - priv->format = i; > - return 0; > - } > - } > + i = match_string(sun50i_a100_ledc_formats, ARRAY_SIZE(sun50i_a100_ledc_formats), format); > + if (i < 0) > + return dev_err_probe(dev, i, "Bad pixel format '%s'\n", format); I know that old code used dev_err_probe() without reason, but could you change it to ordinary dev_err()? dev_err_probe() is useful only when return code could be -EPROBE_DEFER. This is clearly not the case here. Best regards, Jernej > > - return dev_err_probe(dev, -EINVAL, "Bad pixel format '%s'\n", format); > + priv->format = i; > + return 0; > } > > static void sun50i_a100_ledc_set_format(struct sun50i_a100_ledc *priv) >