Some devices return zeroes on read to unmmaped logical blocks.
This patch adds a flag to the mmc quirk list for the devices work that way.
Signed-off-by: Jungseung Lee <js07.lee@xxxxxxxxxxx>
---
include/linux/mmc/card.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 279b390..f032cb0 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -268,6 +268,7 @@ struct mmc_card {
#define MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */
#define MMC_QUIRK_TRIM_BROKEN (1<<12) /* Skip trim */
#define MMC_QUIRK_BROKEN_HPI (1<<13) /* Disable broken HPI support */
+#define MMC_QUIRK_UNMAPPED_ZEROES (1<<14) /* Return 0's on read to unmmaped logical blocks */
bool reenable_cmdq; /* Re-enable Command Queue */
--
2.10.1
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
