diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 3a8f27c3e310a5cd7dea54cac77774166b561122..152dfe593c43a55c2bbd3468a62b8c2504661962 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -2381,8 +2381,10 @@ enum mmc_issued mmc_blk_mq_issue_rq(struct mmc_queue *mq, struct request *req)
}
ret = mmc_blk_cqe_issue_flush(mq, req);
break;
- case REQ_OP_READ:
case REQ_OP_WRITE:
+ card->written_flag = true;
+ fallthrough;
+ case REQ_OP_READ:
if (host->cqe_enabled)
ret = mmc_blk_cqe_issue_rw_rq(mq, req);
else
diff --git a/drivers/mmc/core/card.h b/drivers/mmc/core/card.h
index 4edf9057fa79d320ef24dd47f066f1eb32c47600..b7754a1b8d9788c7f672da0ce8d443cf3cd40968 100644
--- a/drivers/mmc/core/card.h
+++ b/drivers/mmc/core/card.h
@@ -280,4 +280,8 @@ static inline int mmc_card_broken_sd_cache(const struct mmc_card *c)
return c->quirks & MMC_QUIRK_BROKEN_SD_CACHE;
}
+static inline int mmc_card_broken_cache_flush(const struct mmc_card *c)
+{
+ return c->quirks & MMC_QUIRK_BROKEN_CACHE_FLUSH;
+}
#endif
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 8180983bd4029de769a6bf331e2b0a907266cbb4..705942edacc6a8b77e8208b910360758ebccd2c0 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -104,7 +104,7 @@ static int mmc_decode_cid(struct mmc_card *card)
case 3: /* MMC v3.1 - v3.3 */
case 4: /* MMC v4 */
card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
- card->cid.oemid = UNSTUFF_BITS(resp, 104, 8);
+ card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
@@ -2086,13 +2086,17 @@ static int _mmc_flush_cache(struct mmc_host *host)
{
int err = 0;
+ if (mmc_card_broken_cache_flush(host->card) && !host->card->written_flag)
+ return 0;
+
if (_mmc_cache_enabled(host)) {
err = mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_FLUSH_CACHE, 1,
CACHE_FLUSH_TIMEOUT_MS);
if (err)
- pr_err("%s: cache flush error %d\n",
- mmc_hostname(host), err);
+ pr_err("%s: cache flush error %d\n", mmc_hostname(host), err);
+ else
+ host->card->written_flag = false;
}
return err;
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 32b64b564fb1fd774b1546d0f21c918647e71159..cca71867bc4ad6075d24ed617aa83fbe9752f6dd 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -110,11 +110,12 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
MMC_QUIRK_TRIM_BROKEN),
/*
- * Micron MTFC4GACAJCN-1M advertises TRIM but it does not seems to
- * support being used to offload WRITE_ZEROES.
+ * Micron MTFC4GACAJCN-1M supports TRIM but does not appear to support
+ * WRITE_ZEROES offloading. It also supports caching, but the cache can
+ * only be flushed after a write has occurred.
*/
MMC_FIXUP("Q2J54A", CID_MANFID_MICRON, 0x014e, add_quirk_mmc,
- MMC_QUIRK_TRIM_BROKEN),
+ MMC_QUIRK_TRIM_BROKEN | MMC_QUIRK_BROKEN_CACHE_FLUSH),
/*
* Kingston EMMC04G-M627 advertises TRIM but it does not seems to
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
index d83261e857a5d674a129a80dd7d7098e623d4b15..d8a991b349a823487554394a489edb7a2dd85f66 100644
--- a/drivers/mmc/host/sdhci-pci-gli.c
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -28,6 +28,9 @@
#define PCI_GLI_9750_PM_CTRL 0xFC
#define PCI_GLI_9750_PM_STATE GENMASK(1, 0)
+#define PCI_GLI_9750_CORRERR_MASK 0x214
+#define PCI_GLI_9750_CORRERR_MASK_REPLAY_TIMER_TIMEOUT BIT(12)
+
#define SDHCI_GLI_9750_CFG2 0x848
#define SDHCI_GLI_9750_CFG2_L1DLY GENMASK(28, 24)
#define GLI_9750_CFG2_L1DLY_VALUE 0x1F
@@ -152,6 +155,9 @@
#define PCI_GLI_9755_PM_CTRL 0xFC
#define PCI_GLI_9755_PM_STATE GENMASK(1, 0)
+#define PCI_GLI_9755_CORRERR_MASK 0x214
+#define PCI_GLI_9755_CORRERR_MASK_REPLAY_TIMER_TIMEOUT BIT(12)
+
#define SDHCI_GLI_9767_GM_BURST_SIZE 0x510
#define SDHCI_GLI_9767_GM_BURST_SIZE_AXI_ALWAYS_SET BIT(8)
@@ -561,6 +567,11 @@ static void gl9750_hw_setting(struct sdhci_host *host)
value &= ~PCI_GLI_9750_PM_STATE;
pci_write_config_dword(pdev, PCI_GLI_9750_PM_CTRL, value);
+ /* mask the replay timer timeout of AER */
+ pci_read_config_dword(pdev, PCI_GLI_9750_CORRERR_MASK, &value);
+ value |= PCI_GLI_9750_CORRERR_MASK_REPLAY_TIMER_TIMEOUT;
+ pci_write_config_dword(pdev, PCI_GLI_9750_CORRERR_MASK, value);
+
gl9750_wt_off(host);
}
@@ -770,6 +781,11 @@ static void gl9755_hw_setting(struct sdhci_pci_slot *slot)
value &= ~PCI_GLI_9755_PM_STATE;
pci_write_config_dword(pdev, PCI_GLI_9755_PM_CTRL, value);
+ /* mask the replay timer timeout of AER */
+ pci_read_config_dword(pdev, PCI_GLI_9755_CORRERR_MASK, &value);
+ value |= PCI_GLI_9755_CORRERR_MASK_REPLAY_TIMER_TIMEOUT;
+ pci_write_config_dword(pdev, PCI_GLI_9755_CORRERR_MASK, value);
+
gl9755_wt_off(pdev);
}
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
index c125485ba80e9c0bf2d8107ad0e3ad2bb41c780c..967bd2dfcda1b257f518fcde33566a9aefe20a79 100644
--- a/drivers/mmc/host/sdhci_am654.c
+++ b/drivers/mmc/host/sdhci_am654.c
@@ -598,7 +598,7 @@ static int sdhci_am654_get_otap_delay(struct sdhci_host *host,
return 0;
}
- for (i = MMC_TIMING_MMC_HS; i <= MMC_TIMING_MMC_HS400; i++) {
+ for (i = MMC_TIMING_LEGACY; i <= MMC_TIMING_MMC_HS400; i++) {
ret = device_property_read_u32(dev, td[i].otap_binding,
&sdhci_am654->otap_del_sel[i]);
diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c
index de3f443f5fdcc15879d07a0138193c69666d8e6c..fd67c0682b38ae0c4a4ed2dac2fe1f66e5af5f60 100644
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -2309,6 +2309,7 @@ static int vub300_probe(struct usb_interface *interface,
vub300->read_only =
(0x0010 & vub300->system_port_status.port_flags) ? 1 : 0;
} else {
+ retval = -EINVAL;
goto error5;
}
usb_set_intfdata(interface, vub300);
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index daa2f40d9ce65f6654676946a92b89ddbb594c19..7b12eebc5586dcc7cec786001fe7011f675ee9eb 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -295,7 +295,9 @@ struct mmc_card {
#define MMC_QUIRK_BROKEN_HPI (1<<13) /* Disable broken HPI support */
#define MMC_QUIRK_BROKEN_SD_DISCARD (1<<14) /* Disable broken SD discard support */
#define MMC_QUIRK_BROKEN_SD_CACHE (1<<15) /* Disable broken SD cache support */
+#define MMC_QUIRK_BROKEN_CACHE_FLUSH (1<<16) /* Don't flush cache until the write has occurred */
+ bool written_flag; /* Indicates eMMC has been written since power on */
bool reenable_cmdq; /* Re-enable Command Queue */
unsigned int erase_size; /* erase size in sectors */