diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1092-fix-glamo-mci-defeat-ops-during-suspend.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1092-fix-glamo-mci-defeat-ops-during-suspend.patch.patch | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1092-fix-glamo-mci-defeat-ops-during-suspend.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1092-fix-glamo-mci-defeat-ops-during-suspend.patch.patch new file mode 100644 index 0000000000..1713accd70 --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1092-fix-glamo-mci-defeat-ops-during-suspend.patch.patch @@ -0,0 +1,73 @@ +From 99fbe6e31e09c9000668b50a87b3bbb834a145d0 Mon Sep 17 00:00:00 2001 +From: Andy Green <andy@openmoko.com> +Date: Sun, 13 Apr 2008 07:25:50 +0100 +Subject: [PATCH] fix-glamo-mci-defeat-ops-during-suspend.patch + +We need to be able to use the config option CONFIG_MMC_UNSAFE_RESUME that allows the rootfs +to live on SD. But when we use this, it tries to send a reset command to the SD card during +suspend -- and unfortunately many things like Power have suspended by then. + +This patch again rejects IO on the MMC device during suspend of the MMC device, and it +gives the result the rootfs on SD card works okay. + +Signed-off-by: Andy Green <andy@openmoko.com> +--- + drivers/mfd/glamo/glamo-mci.c | 14 ++++++++++++++ + drivers/mfd/glamo/glamo-mci.h | 2 ++ + 2 files changed, 16 insertions(+), 0 deletions(-) + +diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c +index f559e5e..bbbbe4d 100644 +--- a/drivers/mfd/glamo/glamo-mci.c ++++ b/drivers/mfd/glamo/glamo-mci.c +@@ -406,6 +406,14 @@ static void glamo_mci_send_request(struct mmc_host *mmc) + u16 status; + int n; + ++ if (host->suspending) { ++ cmd->error = -EIO; ++ if (cmd->data) ++ cmd->data->error = -EIO; ++ mmc_request_done(mmc, mrq); ++ return; ++ } ++ + host->ccnt++; + /* + * somehow 2.6.24 MCI manages to issue MMC_WRITE_BLOCK *without* the +@@ -792,6 +800,9 @@ static int glamo_mci_remove(struct platform_device *pdev) + static int glamo_mci_suspend(struct platform_device *dev, pm_message_t state) + { + struct mmc_host *mmc = platform_get_drvdata(dev); ++ struct glamo_mci_host *host = mmc_priv(mmc); ++ ++ host->suspending++; + + return mmc_suspend_host(mmc, state); + } +@@ -799,6 +810,9 @@ static int glamo_mci_suspend(struct platform_device *dev, pm_message_t state) + static int glamo_mci_resume(struct platform_device *dev) + { + struct mmc_host *mmc = platform_get_drvdata(dev); ++ struct glamo_mci_host *host = mmc_priv(mmc); ++ ++ host->suspending--; + + return mmc_resume_host(mmc); + } +diff --git a/drivers/mfd/glamo/glamo-mci.h b/drivers/mfd/glamo/glamo-mci.h +index 40c3e24..55852e7 100644 +--- a/drivers/mfd/glamo/glamo-mci.h ++++ b/drivers/mfd/glamo/glamo-mci.h +@@ -34,6 +34,8 @@ struct glamo_mci_host { + int dma; + int data_max_size; + ++ int suspending; ++ + int power_mode_current; + unsigned int vdd_current; + +-- +1.5.6.5 + |