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i2c: mux: reg: wrong condition checked for of_address_to_resource return value

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commit 22ebf00eb5 upstream.

of_address_to_resource return 0 on successful call but
devm_ioremap_resource is called only if it returns non-zero value

Signed-off-by: Lukasz Gemborowski <lukasz.gemborowski@nokia.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lukasz Gemborowski
2016-06-27 12:57:47 +02:00
committed by Greg Kroah-Hartman
parent 470f47fcf2
commit 1b0b5ca8f4
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/muxes/i2c-mux-reg.c
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@@ -150,7 +150,7 @@ static int i2c_mux_reg_probe_dt(struct regmux *mux,
mux->data.idle_in_use = true;
/* map address from "reg" if exists */
if (of_address_to_resource(np, 0, &res)) {
if (of_address_to_resource(np, 0, &res) == 0) {
mux->data.reg_size = resource_size(&res);
mux->data.reg = devm_ioremap_resource(&pdev->dev, &res);
if (IS_ERR(mux->data.reg))