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Date: Mon, 20 Jul 2015 20:41:50 +0800 From: Henry Chen <henryc.chen@...iatek.com> To: Mark Brown <broonie@...nel.org> CC: Matthias Brugger <matthias.bgg@...il.com>, Sascha Hauer <kernel@...gutronix.de>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>, <henryc.chen@...iatek.com>, <eddie.huang@...iatek.com> Subject: [PATCH] regmap: Add function check before called format_val The regmap_format will not be initialize since regmap_bus is not assgined on regmap_init(). It should has a function check before using format_val() to avoid null function called on regmap_bulk_read(). Signed-off-by: Henry Chen <henryc.chen@...iatek.com> --- Based on v4.2rc1 --- drivers/base/regmap/regmap.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 7111d04..c1e8c32 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -2317,7 +2317,10 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, &ival); if (ret != 0) return ret; - map->format.format_val(val + (i * val_bytes), ival, 0); + if (map->format.format_val) + map->format.format_val(val + (i * val_bytes), ival, 0); + else + memcpy(val + (i * val_bytes), &ival, val_bytes); } } -- 1.8.1.1.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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