X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fscsi%2F3w-9xxx.c;h=2239d16fb9b568225df0fa5e0e26eaec4a2be5f7;hb=d21c95c569c462da20d491b75d0a45bd70ddc1bf;hp=b4912d1cee2aa164e81a82ffaefd9e01d991b2b0;hpb=b7e23d913aafc93fc5f119e1be17620073cc3811;p=linux-2.6

diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index b4912d1cee..2239d16fb9 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -140,9 +140,10 @@ static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id);
 /* Functions */
 
 /* Show some statistics about the card */
-static ssize_t twa_show_stats(struct class_device *class_dev, char *buf)
+static ssize_t twa_show_stats(struct device *dev,
+			      struct device_attribute *attr, char *buf)
 {
-	struct Scsi_Host *host = class_to_shost(class_dev);
+	struct Scsi_Host *host = class_to_shost(dev);
 	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
 	unsigned long flags = 0;
 	ssize_t len;
@@ -184,7 +185,7 @@ static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth)
 } /* End twa_change_queue_depth() */
 
 /* Create sysfs 'stats' entry */
-static struct class_device_attribute twa_host_stats_attr = {
+static struct device_attribute twa_host_stats_attr = {
 	.attr = {
 		.name = 	"stats",
 		.mode =		S_IRUGO,
@@ -193,7 +194,7 @@ static struct class_device_attribute twa_host_stats_attr = {
 };
 
 /* Host attributes initializer */
-static struct class_device_attribute *twa_host_attrs[] = {
+static struct device_attribute *twa_host_attrs[] = {
 	&twa_host_stats_attr,
 	NULL,
 };
@@ -861,6 +862,8 @@ out:
 } /* End twa_chrdev_ioctl() */
 
 /* This function handles open for the character device */
+/* NOTE that this function will race with remove; adding BKL
+   will not help. */
 static int twa_chrdev_open(struct inode *inode, struct file *file)
 {
 	unsigned int minor_number;
@@ -1838,12 +1841,11 @@ static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
 		if (scsi_sg_count(srb)) {
 			if ((scsi_sg_count(srb) == 1) &&
 			    (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
-				if (srb->sc_data_direction == DMA_TO_DEVICE || srb->sc_data_direction == DMA_BIDIRECTIONAL) {
-					struct scatterlist *sg = scsi_sglist(srb);
-					char *buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
-					memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length);
-					kunmap_atomic(buf - sg->offset, KM_IRQ0);
-				}
+				if (srb->sc_data_direction == DMA_TO_DEVICE ||
+				    srb->sc_data_direction == DMA_BIDIRECTIONAL)
+					scsi_sg_copy_to_buffer(srb,
+							       tw_dev->generic_buffer_virt[request_id],
+							       TW_SECTOR_SIZE);
 				command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
 				command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH);
 			} else {
@@ -1915,13 +1917,11 @@ static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int re
 	    (cmd->sc_data_direction == DMA_FROM_DEVICE ||
 	     cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
 		if (scsi_sg_count(cmd) == 1) {
-			struct scatterlist *sg = scsi_sglist(tw_dev->srb[request_id]);
-			char *buf;
-			unsigned long flags = 0;
+			unsigned long flags;
+			void *buf = tw_dev->generic_buffer_virt[request_id];
+
 			local_irq_save(flags);
-			buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
-			memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
-			kunmap_atomic(buf - sg->offset, KM_IRQ0);
+			scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE);
 			local_irq_restore(flags);
 		}
 	}
@@ -2028,8 +2028,6 @@ static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id
 	}
 	tw_dev = (TW_Device_Extension *)host->hostdata;
 
-	memset(tw_dev, 0, sizeof(TW_Device_Extension));
-
 	/* Save values to device extension */
 	tw_dev->host = host;
 	tw_dev->tw_pci_dev = pdev;