From b0d06f1cb0e2079a3c64fb6e27c19d9a55c723a1 Mon Sep 17 00:00:00 2001 From: Nicholas Mc Guire Date: Thu, 22 Nov 2018 10:35:19 +0100 Subject: 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 Fixes: ed80a13bb4c4 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs") Acked-by: Martin Blumenstingl Signed-off-by: Ulf Hansson --- drivers/mmc/host/meson-mx-sdio.c | 6 ++++++ 1 file changed, 6 insertions(+) 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; -- cgit v1.2.3