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Add patch to fix Ricoh e823 SD card readers (rhbz 722509)

This commit is contained in:
Josh Boyer 2011-10-06 14:31:40 -04:00
parent 885bf3a7eb
commit dfb88fb9b4
2 changed files with 83 additions and 1 deletions
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11
kernel.spec
View File

@ -51,7 +51,7 @@ Summary: The Linux kernel
# For non-released -rc kernels, this will be prepended with "0.", so
# for example a 3 here will become 0.3
#
%global baserelease 0
%global baserelease 1
%global fedora_build %{baserelease}
# base_sublevel is the kernel version we're starting with and patching
@ -736,6 +736,9 @@ Patch20000: utrace.patch
Patch21000: arm-omap-dt-compat.patch
Patch21001: arm-smsc-support-reading-mac-address-from-device-tree.patch
#rhbz #722509
Patch21002: mmc-Always-check-for-lower-base-frequency-quirk-for-.patch
%endif
BuildRoot: %{_tmppath}/kernel-%{KVERREL}-root
@ -1350,6 +1353,9 @@ ApplyPatch hvcs_pi_buf_alloc.patch
ApplyPatch powerpc-Fix-deadlock-in-icswx-code.patch
#rhbz #722509
ApplyPatch mmc-Always-check-for-lower-base-frequency-quirk-for-.patch
# utrace.
ApplyPatch utrace.patch
@ -2054,6 +2060,9 @@ fi
# and build.
%changelog
* Thu Oct 06 2011 Josh Boyer <jwboyer@redhat.com>
- Add patch to fix base frequency check for Ricoh e823 devices (rhbz 722509)
* Thu Oct 06 2011 Dave Jones <davej@redhat.com>
- Taint if virtualbox modules have been loaded.

73
mmc-Always-check-for-lower-base-frequency-quirk-for-.patch Normal file
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@ -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