diff options
| author |   Nicholas Mc Guire <hofrat@osadl.org> | 2018-12-07 11:34:27 +0100 |
|---|---|---|
| committer |   Geert Uytterhoeven <geert+renesas@glider.be> | 2018-12-18 11:25:56 +0100 |
| commit | db221412cd2014506642967155698825ad80f6b6 (patch) | |
| tree | 98687520711ef194e7b696d173d638b026dcfdf2 /drivers/pinctrl/pinctrl-rza1.c | |
| parent | pinctrl: sh-pfc: r8a77990: Add support for pull-up only pins (diff) | |
| download | linux-dev-db221412cd2014506642967155698825ad80f6b6.tar.xz linux-dev-db221412cd2014506642967155698825ad80f6b6.zip | |
pinctrl: rza1: Handle devm_kasprintf() failure cases
devm_kasprintf() may return NULL on failure of internal allocation
thus the assignments are not safe if not checked. On error
rza1_pinctrl_register() respectively rza1_parse_gpiochip() return
negative values so -ENOMEM in the (unlikely) failure case of
devm_kasprintf() should be fine here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 5a49b644b307 ("pinctrl: Renesas RZ/A1 pin and gpio controller")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl/pinctrl-rza1.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-rza1.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-rza1.c b/drivers/pinctrl/pinctrl-rza1.c index 14eb576c04a2..9cfe9d0520ac 100644 --- a/drivers/pinctrl/pinctrl-rza1.c +++ b/drivers/pinctrl/pinctrl-rza1.c @@ -1225,6 +1225,9 @@ static int rza1_parse_gpiochip(struct rza1_pinctrl *rza1_pctl, chip->base = -1; chip->label = devm_kasprintf(rza1_pctl->dev, GFP_KERNEL, "%pOFn", np); + if (!chip->label) + return -ENOMEM; + chip->ngpio = of_args.args[2]; chip->of_node = np; chip->parent = rza1_pctl->dev; @@ -1326,6 +1329,8 @@ static int rza1_pinctrl_register(struct rza1_pinctrl *rza1_pctl) pins[i].number = i; pins[i].name = devm_kasprintf(rza1_pctl->dev, GFP_KERNEL, "P%u-%u", port, pin); + if (!pins[i].name) + return -ENOMEM; if (i % RZA1_PINS_PER_PORT == 0) { /* |