[140/200] pcmcia: only keep saved I365_CSCINT flag if there is no PCI irq

Greg KH
2010-07-01T21:38:29Z

2.6.34-stable review patch. If anyone has any objections, please let me know.

------------------

From: Dominik Brodowski <linux@dominikbrodowski.net>

commit 02caa56e4b789b80ae7e0f0f0789f94b44ad32ef upstream.

Keeping the saved I365_CSCINT flag around breaks PCMCIA on some system,
and is only needed on a few systems to get PCMCIA to work. This patch
allows PCMCIA to work on both types, and it fixes
https://bugzilla.kernel.org/show_bug.cgi?id=16015

Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/pcmcia/yenta_socket.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -975,7 +975,7 @@ static irqreturn_t yenta_probe_handler(i
/* probes the PCI interrupt, use only on override functions */
static int yenta_probe_cb_irq(struct yenta_socket *socket)
{
- u8 reg;
+ u8 reg = 0;

if (!socket->cb_irq)
return -1;
@@ -989,7 +989,8 @@ static int yenta_probe_cb_irq(struct yen
}

/* generate interrupt, wait */
- reg = exca_readb(socket, I365_CSCINT);
+ if (!socket->dev->irq)
+ reg = exca_readb(socket, I365_CSCINT);
exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
cb_writel(socket, CB_SOCKET_EVENT, -1);
cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);