[PATCH] isicom: correct firmware loading

- loading of firmware didn't fail when something went wrong (returned 0).

- pointer to frame was incremented only by sizeof(frame) excluding its
  data contents -- bad idea.

- tell the card we're ready just after checking is complete, not before.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 19 insertions, 16 deletions

diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index 913be23..2e1da63 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -1756,9 +1756,12 @@ static int __devinit load_firmware(struct pci_dev *pdev,
 	if (retval)
 		goto end;
 
+	retval = -EIO;
+
 	for (frame = (struct stframe *)fw->data;
 			frame < (struct stframe *)(fw->data + fw->size);
-			frame++) {
+			frame = (struct stframe *)((u8 *)(frame + 1) +
+				frame->count)) {
 		if (WaitTillCardIsFree(base))
 			goto errrelfw;
 
@@ -1797,23 +1800,12 @@ static int __devinit load_firmware(struct pci_dev *pdev,
 		}
  	}
 
-	retval = -EIO;
-
-	if (WaitTillCardIsFree(base))
-		goto errrelfw;
-
-	outw(0xf2, base);
-	outw(0x800, base);
-	outw(0x0, base);
-	outw(0x0, base);
-	InterruptTheCard(base);
-	outw(0x0, base + 0x4); /* for ISI4608 cards */
-
 /* XXX: should we test it by reading it back and comparing with original like
  * in load firmware package? */
-	for (frame = (struct stframe*)fw->data;
-			frame < (struct stframe*)(fw->data + fw->size);
-			frame++) {
+	for (frame = (struct stframe *)fw->data;
+			frame < (struct stframe *)(fw->data + fw->size);
+			frame = (struct stframe *)((u8 *)(frame + 1) +
+				frame->count)) {
 		if (WaitTillCardIsFree(base))
 			goto errrelfw;
 
@@ -1863,6 +1855,17 @@ static int __devinit load_firmware(struct pci_dev *pdev,
 		}
 	}
 
+	/* xfer ctrl */
+	if (WaitTillCardIsFree(base))
+		goto errrelfw;
+
+	outw(0xf2, base);
+	outw(0x800, base);
+	outw(0x0, base);
+	outw(0x0, base);
+	InterruptTheCard(base);
+	outw(0x0, base + 0x4); /* for ISI4608 cards */
+
 	board->status |= FIRMWARE_LOADED;
 	retval = 0;