ata: sata_dwc_460ex: Fix crash due to OOB write

[sfrench/cifs-2.6.git] / drivers / ata / sata_dwc_460ex.c

diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index bec33d781ae046f989742c0b381b06ca6bd92beb..e3263e961045ac342636156d40986a11a85ebe33 100644 (file)
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -137,7 +137,11 @@ struct sata_dwc_device {
 #endif
 };
 
-#define SATA_DWC_QCMD_MAX      32
+/*
+ * Allow one extra special slot for commands and DMA management
+ * to account for libata internal commands.
+ */
+#define SATA_DWC_QCMD_MAX      (ATA_MAX_QUEUE + 1)
 
 struct sata_dwc_device_port {
        struct sata_dwc_device  *hsdev;