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Mon, 28 Nov 2016 06:56:52 +0000 Message-ID: <8737icayac.wl%kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH v2] clkdev: add devm_of_clk_get() User-Agent: Wanderlust/2.15.9 Emacs/24.3 Mule/6.0 To: Stephen Boyd , Rob Herring , Linux-ALSA , Linux-DT , Michael Turquette , Russell King , Linux-Kernel , Mark Brown , , Linux-ARM MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Date: Mon, 28 Nov 2016 06:56:52 +0000 X-Originating-IP: [211.11.155.144] X-ClientProxiedBy: TY1PR06CA0040.apcprd06.prod.outlook.com (10.164.91.50) To SG2PR0601MB1456.apcprd06.prod.outlook.com (10.169.106.22) X-MS-Office365-Filtering-Correlation-Id: 638dda4f-7714-4d91-385f-08d4175bbc36 X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001); SRVR:SG2PR0601MB1456; X-Microsoft-Exchange-Diagnostics: 1; SG2PR0601MB1456; 3:xWmPigjlZ1/lbVaIpH0CGUPw8rr+fOSUJ2X7ZsvFo3I38/ArvRcTn1jnltd9DHa6mATcAd1JPgl0VltmcuNmAiGe7UWpoZLkrtlXnEDzeAWymSdHKPquqquEs077tc8YlQLVjYoQL9YsjbJfC6TqBbsIbp4n6l+36w2f7WfjcIWYuDlyCXlomz8c4OkIhZx3tZRNLRdGW5bNIRLK9N37PMBvvv4op3VVGJv7g0wlnwOYyHp1jSa7zRgOoxpYOcbc0uw/GNfdgkDGEcfvCoSTUg==; 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This patch adds it. This is based on devm_clk_get() Signed-off-by: Kuninori Morimoto --- v1 -> v2 - update git log drivers/clk/clkdev.c | 26 ++++++++++++++++++++++++++ include/linux/clk.h | 7 +++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 89cc700..93a613b 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -55,6 +55,32 @@ struct clk *of_clk_get(struct device_node *np, int index) } EXPORT_SYMBOL(of_clk_get); +static void devm_of_clk_release(struct device *dev, void *res) +{ + clk_put(*(struct clk **)res); +} + +struct clk *devm_of_clk_get(struct device *dev, + struct device_node *np, int index) +{ + struct clk **ptr, *clk; + + ptr = devres_alloc(devm_of_clk_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + clk = of_clk_get(np, index); + if (!IS_ERR(clk)) { + *ptr = clk; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return clk; +} +EXPORT_SYMBOL(devm_of_clk_get); + static struct clk *__of_clk_get_by_name(struct device_node *np, const char *dev_id, const char *name) diff --git a/include/linux/clk.h b/include/linux/clk.h index a89ba4e..33cd540 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -502,6 +502,8 @@ struct of_phandle_args; #if defined(CONFIG_OF) && defined(CONFIG_COMMON_CLK) struct clk *of_clk_get(struct device_node *np, int index); +struct clk *devm_of_clk_get(struct device *dev, + struct device_node *np, int index); struct clk *of_clk_get_by_name(struct device_node *np, const char *name); struct clk *of_clk_get_from_provider(struct of_phandle_args *clkspec); #else @@ -509,6 +511,11 @@ static inline struct clk *of_clk_get(struct device_node *np, int index) { return ERR_PTR(-ENOENT); } +static inline struct clk *devm_of_clk_get(struct device *dev, + struct device_node *np, int index) +{ + return ERR_PTR(-ENOENT); +} static inline struct clk *of_clk_get_by_name(struct device_node *np, const char *name) {