4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
commit ce068e83976140badb19c7f1307926b4b562fac4 upstream.
ich7_lpc_probe() uses pci_read_config_dword() that returns PCIBIOS_*
codes. The error handling code assumes incorrectly it's a normal errno
and checks for < 0. The return code is returned from the probe function
as is but probe functions should return normal errnos.
Remove < 0 from the check and convert PCIBIOS_* returns code using
pcibios_err_to_errno() into normal errno before returning it.
Fixes: a328e95b82c1 ("leds: LED driver for Intel NAS SS4200 series (v5)")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240527132700.14260-1-ilpo.jarvinen@xxxxxxxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/leds/leds-ss4200.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/leds/leds-ss4200.c
+++ b/drivers/leds/leds-ss4200.c
@@ -368,8 +368,10 @@ static int ich7_lpc_probe(struct pci_dev
nas_gpio_pci_dev = dev;
status = pci_read_config_dword(dev, PMBASE, &g_pm_io_base);
- if (status)
+ if (status) {
+ status = pcibios_err_to_errno(status);
goto out;
+ }
g_pm_io_base &= 0x00000ff80;
status = pci_read_config_dword(dev, GPIO_CTRL, &gc);
@@ -381,8 +383,9 @@ static int ich7_lpc_probe(struct pci_dev
}
status = pci_read_config_dword(dev, GPIO_BASE, &nas_gpio_io_base);
- if (0 > status) {
+ if (status) {
dev_info(&dev->dev, "Unable to read GPIOBASE.\n");
+ status = pcibios_err_to_errno(status);
goto out;
}
dev_dbg(&dev->dev, ": GPIOBASE = 0x%08x\n", nas_gpio_io_base);
