The patch titled
mmc: quirk for broken reset
has been removed from the -mm tree. Its filename is
mmc-quirk-for-broken-reset.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: mmc: quirk for broken reset
From: Pierre Ossman <drzeus@xxxxxxxxx>
Some controllers fail to complete a reset unless you touch the clock register
first.
Signed-off-by: Pierre Ossman <drzeus@xxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/mmc/sdhci.c | 29 +++++++++++++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)
diff -puN drivers/mmc/sdhci.c~mmc-quirk-for-broken-reset drivers/mmc/sdhci.c
--- a/drivers/mmc/sdhci.c~mmc-quirk-for-broken-reset
+++ a/drivers/mmc/sdhci.c
@@ -32,9 +32,21 @@ static unsigned int debug_nodma = 0;
static unsigned int debug_forcedma = 0;
static unsigned int debug_quirks = 0;
+#define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
+
static const struct pci_device_id pci_ids[] __devinitdata = {
- /* handle any SD host controller */
- {PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)},
+ {
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = PCI_DEVICE_ID_RICOH_R5C822,
+ .subvendor = PCI_VENDOR_ID_IBM,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = SDHCI_QUIRK_CLOCK_BEFORE_RESET,
+ },
+
+ { /* Generic SD host controller */
+ PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
+ },
+
{ /* end: all zeroes */ },
};
@@ -808,6 +820,19 @@ static void sdhci_tasklet_finish(unsigne
if ((mrq->cmd->error != MMC_ERR_NONE) ||
(mrq->data && ((mrq->data->error != MMC_ERR_NONE) ||
(mrq->data->stop && (mrq->data->stop->error != MMC_ERR_NONE))))) {
+
+ /* Some controllers need this kick or reset won't work here */
+ if (host->chip->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET) {
+ unsigned int clock;
+
+ /* This is to force an update */
+ clock = host->clock;
+ host->clock = 0;
+ sdhci_set_clock(host, clock);
+ }
+
+ /* Spec says we should do both at the same time, but Ricoh
+ controllers do not like that. */
sdhci_reset(host, SDHCI_RESET_CMD);
sdhci_reset(host, SDHCI_RESET_DATA);
}
_
Patches currently in -mm which might be from drzeus@xxxxxxxxx are
origin.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
