[PATCH] m68k: completely initialize hw_regs_t in ide_setup_ports

ide_setup_ports does not completely initialize the hw_regs_t structure which
can cause random failures, as the structure is often on the stack.  None of
the callers expect a partially initialized structure, i.e.  none of them do
any setup of their own before calling ide_setup_ports().

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 3fdab563fec2..f5a60912c271 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -726,6 +726,7 @@ void ide_setup_ports (	hw_regs_t *hw,
 {
         int i;
 
+        memset(hw, 0, sizeof(hw_regs_t));
         for (i = 0; i < IDE_NR_PORTS; i++) {
                 if (offsets[i] == -1) {
                         switch(i) {
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 2a78b792f7fb..434a94faa3b7 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -80,6 +80,7 @@ void q40_ide_setup_ports ( hw_regs_t *hw,
 {
         int i;
 
+        memset(hw, 0, sizeof(hw_regs_t));
         for (i = 0; i < IDE_NR_PORTS; i++) {
                 /* BIG FAT WARNING: 
                    assumption: only DATA port is ever used in 16 bit mode */