mmc: dw_mmc: Fix null dma_ops access when use_dma is false

host->dma_ops is not valid if host->usa dma is 0 so protect
host->dma_ops reference in dw_mci_resume

Signed-off-by: Jonathan Kliegman <[email protected]>
Acked-by: Jaehoon Chung <[email protected]>
Acked-by: Will Newton <[email protected]>
Signed-off-by: Chris Ball <[email protected]>

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 5a600b3b3199cd50bea6a963f56c2bdc1ddbf1a1..72dc3cde646d063513f3a55fc8ba0ec74197261b 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2186,7 +2186,7 @@ int dw_mci_resume(struct dw_mci *host)
                return ret;
        }
 
-       if (host->dma_ops->init)
+       if (host->use_dma && host->dma_ops->init)
                host->dma_ops->init(host);
 
        /* Restore the old value at FIFOTH register */