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| author | Michal Suchanek <msuchanek@suse.de> | 2022-10-12 21:57:59 +0200 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2022-10-17 21:17:12 -0600 |
| commit | c726fc01cf669e3e2979da8665ef660e7d3ba464 (patch) | |
| tree | 5d11dc2d0e58fac8a08cb1e2425ff0ae10ad0a8a /arch/x86 | |
| parent | 8676ae36ae4617b20b5cc49972c54c63c7b27bb3 (diff) | |
| download | u-boot-c726fc01cf669e3e2979da8665ef660e7d3ba464.zip u-boot-c726fc01cf669e3e2979da8665ef660e7d3ba464.tar.gz u-boot-c726fc01cf669e3e2979da8665ef660e7d3ba464.tar.bz2 | |
dm: treewide: Use uclass_first_device_err when accessing one device
There is a number of users that use uclass_first_device to access the
first and (assumed) only device in uclass.
Some check the return value of uclass_first_device and also that a
device was returned which is exactly what uclass_first_device_err does.
Some are not checking that a device was returned and can potentially
crash if no device exists in the uclass. Finally there is one that
returns NULL on error either way.
Convert all of these to use uclass_first_device_err instead, the return
value will be removed from uclass_first_device in a later patch.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/broadwell/cpu.c | 4 | ||||
| -rw-r--r-- | arch/x86/cpu/intel_common/cpu.c | 4 | ||||
| -rw-r--r-- | arch/x86/lib/pinctrl_ich6.c | 4 |
3 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86/cpu/broadwell/cpu.c b/arch/x86/cpu/broadwell/cpu.c index 2adcf4b..7877961 100644 --- a/arch/x86/cpu/broadwell/cpu.c +++ b/arch/x86/cpu/broadwell/cpu.c @@ -31,11 +31,9 @@ static int broadwell_init_cpu(void *ctx, struct event *event) int ret; /* Start up the LPC so we have serial */ - ret = uclass_first_device(UCLASS_LPC, &dev); + ret = uclass_first_device_err(UCLASS_LPC, &dev); if (ret) return ret; - if (!dev) - return -ENODEV; ret = cpu_set_flex_ratio_to_tdp_nominal(); if (ret) return ret; diff --git a/arch/x86/cpu/intel_common/cpu.c b/arch/x86/cpu/intel_common/cpu.c index 96d05e2..8f489e6 100644 --- a/arch/x86/cpu/intel_common/cpu.c +++ b/arch/x86/cpu/intel_common/cpu.c @@ -61,11 +61,9 @@ int cpu_common_init(void) /* Early chipset init required before RAM init can work */ uclass_first_device(UCLASS_NORTHBRIDGE, &dev); - ret = uclass_first_device(UCLASS_LPC, &lpc); + ret = uclass_first_device_err(UCLASS_LPC, &lpc); if (ret) return ret; - if (!lpc) - return -ENODEV; /* Cause the SATA device to do its early init */ uclass_first_device(UCLASS_AHCI, &dev); diff --git a/arch/x86/lib/pinctrl_ich6.c b/arch/x86/lib/pinctrl_ich6.c index fd5e311..c93f245 100644 --- a/arch/x86/lib/pinctrl_ich6.c +++ b/arch/x86/lib/pinctrl_ich6.c @@ -160,11 +160,9 @@ static int ich6_pinctrl_probe(struct udevice *dev) u32 iobase = -1; debug("%s: start\n", __func__); - ret = uclass_first_device(UCLASS_PCH, &pch); + ret = uclass_first_device_err(UCLASS_PCH, &pch); if (ret) return ret; - if (!pch) - return -ENODEV; /* * Get the memory/io base address to configure every pins. |