The patch titled
parport: prevent ARM boards frmo crashing when CUPS is loaded
has been added to the -mm tree. Its filename is
parport-prevent-arm-boards-frmo-crashing-when-cups-is-loaded.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: parport: prevent ARM boards frmo crashing when CUPS is loaded
From: Lee Jones <lee.jones@xxxxxxxxxxxxx>
When CUPS loads, it tries to load several drivers that it may need. When
one of these drivers, specifically parport_pc is loaded on ARM based
systems, it causes a segmentation fault as the ISA addresses which are
attempted are not writable on non-PC based architectures. This code
prevents ISA addresses from being attempted except on x86.
Addresses http://bugs.launchpad.net/bugs/601226
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/include/asm/parport.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff -puN arch/arm/include/asm/parport.h~parport-prevent-arm-boards-frmo-crashing-when-cups-is-loaded arch/arm/include/asm/parport.h
--- a/arch/arm/include/asm/parport.h~parport-prevent-arm-boards-frmo-crashing-when-cups-is-loaded
+++ a/arch/arm/include/asm/parport.h
@@ -9,10 +9,13 @@
#ifndef __ASMARM_PARPORT_H
#define __ASMARM_PARPORT_H
-static int __devinit parport_pc_find_isa_ports (int autoirq, int autodma);
static int __devinit parport_pc_find_nonpci_ports (int autoirq, int autodma)
{
- return parport_pc_find_isa_ports (autoirq, autodma);
+/* parport_pc_find_isa_ports uses direct register addresses which are
+ * only correct on x86 architectures. This may have undesirable
+ * consequences (including segfaults) when used on other architectures.
+ */
+ return 0;
}
#endif /* !(_ASMARM_PARPORT_H) */
_
Patches currently in -mm which might be from lee.jones@xxxxxxxxxxxxx are
parport-prevent-arm-boards-frmo-crashing-when-cups-is-loaded.patch
parport-prevent-arm-boards-frmo-crashing-when-cups-is-loaded-fix.patch
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