[PATCH] i2c/pci: fix sis96x smbus quirk once and for all (2f5c33b3) · Commits · 戴 / test

The sis96x SMBus PCI device depends on two different quirks to run in a specific order. Apart from being fragile, this was found to actually break on (at least) recent FC4, FC5, and FC6 kernels. This patch fixes the quirks so that they work without relying on the compiler and/or linker to put them in any specific order. http://lists.lm-sensors.org/pipermail/lm-sensors/2006-April/015962.html https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=189719 I tested this patch. Signed-off-by:

Mark M. Hoffman <mhoffman@lightlink.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Adrian Bunk <bunk@stusta.de> Cc: Greg K-H <greg@kroah.com> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

drivers/pci/quirks.c

+8 −6

Original line number	Diff line number	Diff line
		@@ -1117,10 +1117,11 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_h
		static void quirk_sis_96x_smbus(struct pci_dev *dev)
		{
		u8 val = 0;
		printk(KERN_INFO "Enabling SiS 96x SMBus.\n");
		pci_read_config_byte(dev, 0x77, &val);
		if (val & 0x10) {
		printk(KERN_INFO "Enabling SiS 96x SMBus.\n");
		pci_write_config_byte(dev, 0x77, val & ~0x10);
		pci_read_config_byte(dev, 0x77, &val);
		}
		}

		/*
		@@ -1152,11 +1153,12 @@ static void quirk_sis_503(struct pci_dev *dev)
		printk(KERN_WARNING "Uncovering SIS%x that hid as a SIS503 (compatible=%d)\n", devid, sis_96x_compatible);

		/*
		* Ok, it now shows up as a 96x.. The 96x quirks are after
		* the 503 quirk in the quirk table, so they'll automatically
		* run and enable things like the SMBus device
		* Ok, it now shows up as a 96x.. run the 96x quirk by
		* hand in case it has already been processed.
		* (depends on link order, which is apparently not guaranteed)
		*/
		dev->device = devid;
		quirk_sis_96x_smbus(dev);
		}

		static void __init quirk_sis_96x_compatible(struct pci_dev *dev)

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