[Bug 16015] New: yenta_socket.c broken wireless cards.

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Thu May 20 09:26:36 EDT 2010


           Summary: yenta_socket.c  broken wireless cards.
           Product: Drivers
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: PCMCIA
        AssignedTo: linux-pcmcia at lists.infradead.org
        ReportedBy: justinmattock at gmail.com
        Regression: Yes

I've sent this out to the appropriate lists, but received no response
(I don't have the time to sit and wait around for people who can figure out how
todo their jobs)

Anyways here is the patch/bisection:

I've an old dell inspiron 1200(amazingly still works), that use's
a D-Link DWL-G650, and/or a Dell Wireless 1350 for it's wireless

With using opensuse11.2(kernel:2.6.32*), the card(s) work fine, but as soon
as I pulled the latest HEAD, all hell broke loose. So after doing a
days worth of bisecting with this machine(painfully slow), it finally
came down to this commit:

commit 28ca8dd71fc170090edca62cb8129625d01b7760
Author: Jens K<C3><BC>nzer <Jens.Kuenzer at fpga.homeip.net>
Date:   Sat Mar 6 07:46:16 2010 +0100

    pcmcia: honor saved flags in yenta_socket's I365_CSCINT register

    Instead of overwriting the I365_CSCINT register, save the old value and
    merely change the bits we care about.

    Part 1 of a series to allow the ISA irq to be used for Cardbus devices
    if the socket's PCI irq is unusable.

    [linux at dominikbrodowski.net: split up the original patch, commit message]

    Signed-off-by: Jens Kuenzer <Jens.Kuenzer at fpga.homeip.net>
    Signed-off-by: Dominik Brodowski <linux at dominikbrodowski.net>

so after fussing around with this commit, and yenta_socket.c
I come up with something, that does get my cards
powered up, and all good(hopefully).

Anyways please have a look, if you need me to test something
different let me know. 

 Signed-off-by: Justin P. Mattock <justinmattock at gmail.com>

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

diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index 83ace27..7d6f43b 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -989,7 +989,7 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket)

     /* generate interrupt, wait */
-    reg = exca_readb(socket, I365_CSCINT);
+    reg = exca_readb(socket, I365_CSCINT | I365_CSC_ANY);
     exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
     cb_writel(socket, CB_SOCKET_EVENT, -1);
     cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);

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