mmc: sdhci: Fix ADMA for PAGE_SIZE >= 64KiB

[platform/kernel/linux-rpi.git] / drivers / mmc / host / sdhci.h

diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index e8d04e4..6c689be 100644 (file)
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -340,7 +340,8 @@ struct sdhci_adma2_64_desc {
 
 /*
  * Maximum segments assuming a 512KiB maximum requisition size and a minimum
- * 4KiB page size.
+ * 4KiB page size. Note this also allows enough for multiple descriptors in
+ * case of PAGE_SIZE >= 64KiB.
  */
 #define SDHCI_MAX_SEGS         128
 
@@ -543,6 +544,7 @@ struct sdhci_host {
        unsigned int blocks;    /* remaining PIO blocks */
 
        int sg_count;           /* Mapped sg entries */
+       int max_adma;           /* Max. length in ADMA descriptor */
 
        void *adma_table;       /* ADMA descriptor table */
        void *align_buffer;     /* Bounce buffer */