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| author | Nicholas Mc Guire <hofrat@osadl.org> | 2018-11-22 10:35:19 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-12-17 08:26:24 +0100 |
| commit | b0d06f1cb0e2079a3c64fb6e27c19d9a55c723a1 (patch) | |
| tree | bc8796c973820d2b6b48457fdb91aaef774ff5b8 | |
| parent | 48e304cc1970b65f43c0d2f82aaf48285f0eccd2 (diff) | |
| download | linux-b0d06f1cb0e2079a3c64fb6e27c19d9a55c723a1.tar.gz linux-b0d06f1cb0e2079a3c64fb6e27c19d9a55c723a1.tar.bz2 linux-b0d06f1cb0e2079a3c64fb6e27c19d9a55c723a1.zip | |
mmc: meson-mx-sdio: check devm_kasprintf for failure
devm_kasprintf() may return NULL on failure of internal allocation thus
the assignments to init.name are not safe if not checked. On error
meson_mx_mmc_register_clks() returns 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: ed80a13bb4c4 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs")
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/meson-mx-sdio.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/host/meson-mx-sdio.c b/drivers/mmc/host/meson-mx-sdio.c index abe253c262a2..ec980bda071c 100644 --- a/drivers/mmc/host/meson-mx-sdio.c +++ b/drivers/mmc/host/meson-mx-sdio.c @@ -596,6 +596,9 @@ static int meson_mx_mmc_register_clks(struct meson_mx_mmc_host *host) init.name = devm_kasprintf(host->controller_dev, GFP_KERNEL, "%s#fixed_factor", dev_name(host->controller_dev)); + if (!init.name) + return -ENOMEM; + init.ops = &clk_fixed_factor_ops; init.flags = 0; init.parent_names = &clk_fixed_factor_parent; @@ -612,6 +615,9 @@ static int meson_mx_mmc_register_clks(struct meson_mx_mmc_host *host) clk_div_parent = __clk_get_name(host->fixed_factor_clk); init.name = devm_kasprintf(host->controller_dev, GFP_KERNEL, "%s#div", dev_name(host->controller_dev)); + if (!init.name) + return -ENOMEM; + init.ops = &clk_divider_ops; init.flags = CLK_SET_RATE_PARENT; init.parent_names = &clk_div_parent; |