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| author | Jean Delvare <khali@linux-fr.org> | 2012-01-12 20:32:03 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 17:24:45 -0800 |
| commit | fcf53a1ed4225c1f23997ef02f2770a39e73c515 (patch) | |
| tree | 629873ccdc2656feb505627ce4df04faaa34fd5c /drivers/i2c/busses/i2c-sis630.c | |
| parent | 8aee2e296d19910d8ad4c676970f0055abc5b5e5 (diff) | |
| download | kernel_samsung_smdk4412-fcf53a1ed4225c1f23997ef02f2770a39e73c515.zip kernel_samsung_smdk4412-fcf53a1ed4225c1f23997ef02f2770a39e73c515.tar.gz kernel_samsung_smdk4412-fcf53a1ed4225c1f23997ef02f2770a39e73c515.tar.bz2 | |
i2c: Fix error value returned by several bus drivers
commit 7c1f59c9d5caf3a84f35549b5d58f3c055a68da5 upstream.
When adding checks for ACPI resource conflicts to many bus drivers,
not enough attention was paid to the error paths, and for several
drivers this causes 0 to be returned on error in some cases. Fix this
by properly returning a non-zero value on every error.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-sis630.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sis630.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index e6f539e..b617fd0 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -393,7 +393,7 @@ static int __devinit sis630_setup(struct pci_dev *sis630_dev) { unsigned char b; struct pci_dev *dummy = NULL; - int retval = -ENODEV, i; + int retval, i; /* check for supported SiS devices */ for (i=0; supported[i] > 0 ; i++) { @@ -418,18 +418,21 @@ static int __devinit sis630_setup(struct pci_dev *sis630_dev) */ if (pci_read_config_byte(sis630_dev, SIS630_BIOS_CTL_REG,&b)) { dev_err(&sis630_dev->dev, "Error: Can't read bios ctl reg\n"); + retval = -ENODEV; goto exit; } /* if ACPI already enabled , do nothing */ if (!(b & 0x80) && pci_write_config_byte(sis630_dev, SIS630_BIOS_CTL_REG, b | 0x80)) { dev_err(&sis630_dev->dev, "Error: Can't enable ACPI\n"); + retval = -ENODEV; goto exit; } /* Determine the ACPI base address */ if (pci_read_config_word(sis630_dev,SIS630_ACPI_BASE_REG,&acpi_base)) { dev_err(&sis630_dev->dev, "Error: Can't determine ACPI base address\n"); + retval = -ENODEV; goto exit; } @@ -445,6 +448,7 @@ static int __devinit sis630_setup(struct pci_dev *sis630_dev) sis630_driver.name)) { dev_err(&sis630_dev->dev, "SMBus registers 0x%04x-0x%04x already " "in use!\n", acpi_base + SMB_STS, acpi_base + SMB_SAA); + retval = -EBUSY; goto exit; } |