From: Stefan Wahren Date: Sat, 25 Jun 2022 08:36:43 +0000 (+0200) Subject: clk: bcm: rpi: Fix error handling of raspberrypi_fw_get_rate X-Git-Tag: v6.0-rc4~11^2~4 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=35f73cca1cecda0c1f8bb7d8be4ce5cd2d46ae8c;p=thirdparty%2Flinux.git clk: bcm: rpi: Fix error handling of raspberrypi_fw_get_rate The function raspberrypi_fw_get_rate (e.g. used for the recalc_rate hook) can fail to get the clock rate from the firmware. In this case we cannot return a signed error value, which would be casted to unsigned long. Fix this by returning 0 instead. Signed-off-by: Stefan Wahren Link: https://lore.kernel.org/r/20220625083643.4012-1-stefan.wahren@i2se.com Fixes: 4e85e535e6cc ("clk: bcm283x: add driver interfacing with Raspberry Pi's firmware") Acked-by: Florian Fainelli Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c index 73518009a0f20..39d63c983d62c 100644 --- a/drivers/clk/bcm/clk-raspberrypi.c +++ b/drivers/clk/bcm/clk-raspberrypi.c @@ -203,7 +203,7 @@ static unsigned long raspberrypi_fw_get_rate(struct clk_hw *hw, ret = raspberrypi_clock_property(rpi->firmware, data, RPI_FIRMWARE_GET_CLOCK_RATE, &val); if (ret) - return ret; + return 0; return val; }