system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-21 03:28:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

OMAP2xxx clock: fix broken cpu_mask code

Browse source 
Commit 8ad8ff6548 breaks the OMAP2xxx
cpu_mask code, which causes OMAP2xxx to panic on boot.  Fix by
removing the cpu_mask auto variable and by changing CK_242X
and CK_243X to use RATE_IN_242X/RATE_IN_243X.

Resolves

<1>Unable to handle kernel NULL pointer dereference at virtual address 0000000c
<1>pgd = c0004000
<1>[0000000c] *pgd=00000000
Internal error: Oops: 5 [#1]
Modules linked in:
CPU: 0    Not tainted  (2.6.29-omap1 #32)
PC is at omap2_clk_set_parent+0x104/0x120
LR is at omap2_clk_set_parent+0x28/0x120

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Paul Walmsley 2009-04-23 21:11:06 -06:00 committed by paul
parent c8088112fd
commit 15ca78f792
1 changed files with 3 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
arch/arm/mach-omap2/clock24xx.c
View file

@ -60,8 +60,8 @@ struct omap_clk {
}, \
}
#define CK_243X (1 << 0)
#define CK_242X (1 << 1)
#define CK_243X RATE_IN_243X
#define CK_242X RATE_IN_242X
static struct omap_clk omap24xx_clks[] = {
/* external root sources */
@ -711,7 +711,7 @@ int __init omap2_clk_init(void)
{
struct prcm_config *prcm;
struct omap_clk *c;
u32 clkrate, cpu_mask;
u32 clkrate;
if (cpu_is_omap242x())
cpu_mask = RATE_IN_242X;
@ -728,12 +728,6 @@ int __init omap2_clk_init(void)
sys_ck.rate = omap2_sys_clk_recalc(&sys_ck);
propagate_rate(&sys_ck);
cpu_mask = 0;
if (cpu_is_omap2420())
cpu_mask |= CK_242X;
if (cpu_is_omap2430())
cpu_mask |= CK_243X;
for (c = omap24xx_clks; c < omap24xx_clks + ARRAY_SIZE(omap24xx_clks); c++)
if (c->cpu & cpu_mask) {
clkdev_add(&c->lk);