diff options
Diffstat (limited to 'mmc-Always-check-for-lower-base-frequency-quirk-for-.patch')
| -rw-r--r-- | mmc-Always-check-for-lower-base-frequency-quirk-for-.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/mmc-Always-check-for-lower-base-frequency-quirk-for-.patch b/mmc-Always-check-for-lower-base-frequency-quirk-for-.patch new file mode 100644 index 000000000..2d7caad83 --- /dev/null +++ b/mmc-Always-check-for-lower-base-frequency-quirk-for-.patch @@ -0,0 +1,73 @@ +From 65ff02dff67bf26a9c27d9aa11a30eaf3d28469e Mon Sep 17 00:00:00 2001 +From: Josh Boyer <jwboyer@redhat.com> +Date: Wed, 5 Oct 2011 11:29:57 -0400 +Subject: [PATCH] mmc: Always check for lower base frequency quirk for Ricoh + 1180:e823 + +Commit 15bed0f2f added a quirk for the e823 Ricoh card reader to lower the +base frequency. However, the quirk first checks to see if the proprietary +MMC controller is disabled, and returns if so. On some devices, such as the +Lenovo X220, the MMC controller is already disabled by firmware it seems, +but the frequency change is still needed so sdhci-pci can talk to the cards. +Since the MMC controller is disabled, the frequency fixup was never being run +on these machines. + +This moves the e823 check above the MMC controller check so that it always +gets run. + +This fixes https://bugzilla.redhat.com/show_bug.cgi?id=722509 + +Signed-off-by: Josh Boyer <jwboyer@redhat.com> +--- + drivers/pci/quirks.c | 28 ++++++++++++++-------------- + 1 files changed, 14 insertions(+), 14 deletions(-) + +diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c +index 1196f61..cec4629 100644 +--- a/drivers/pci/quirks.c ++++ b/drivers/pci/quirks.c +@@ -2745,20 +2745,6 @@ static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) + /* disable must be done via function #0 */ + if (PCI_FUNC(dev->devfn)) + return; +- +- pci_read_config_byte(dev, 0xCB, &disable); +- +- if (disable & 0x02) +- return; +- +- pci_read_config_byte(dev, 0xCA, &write_enable); +- pci_write_config_byte(dev, 0xCA, 0x57); +- pci_write_config_byte(dev, 0xCB, disable | 0x02); +- pci_write_config_byte(dev, 0xCA, write_enable); +- +- dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); +- dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); +- + /* + * RICOH 0xe823 SD/MMC card reader fails to recognize + * certain types of SD/MMC cards. Lowering the SD base +@@ -2781,6 +2767,20 @@ static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) + + dev_notice(&dev->dev, "MMC controller base frequency changed to 50Mhz.\n"); + } ++ ++ pci_read_config_byte(dev, 0xCB, &disable); ++ ++ if (disable & 0x02) ++ return; ++ ++ pci_read_config_byte(dev, 0xCA, &write_enable); ++ pci_write_config_byte(dev, 0xCA, 0x57); ++ pci_write_config_byte(dev, 0xCB, disable | 0x02); ++ pci_write_config_byte(dev, 0xCA, write_enable); ++ ++ dev_notice(&dev->dev, "proprietary Ricoh MMC controller disabled (via firewire function)\n"); ++ dev_notice(&dev->dev, "MMC cards are now supported by standard SDHCI controller\n"); ++ + } + DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); + DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); +-- +1.7.6.4 + |