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regmap: fix NULL deref on lookup
commitc6df843348
upstream. Not all regmaps have a name so make sure to check for that to avoid dereferencing a NULL pointer when dev_get_regmap() is used to lookup a named regmap. Fixes:e84861fec3
("regmap: dev_get_regmap_match(): fix string comparison") Cc: stable@vger.kernel.org # 5.8 Cc: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20231006082104.16707-1-johan+linaro@kernel.org Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1511,7 +1511,7 @@ static int dev_get_regmap_match(struct device *dev, void *res, void *data)
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/* If the user didn't specify a name match any */
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/* If the user didn't specify a name match any */
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if (data)
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if (data)
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return !strcmp((*r)->name, data);
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return (*r)->name && !strcmp((*r)->name, data);
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else
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else
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return 1;
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return 1;
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}
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}
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