Commit 90bdfa0b authored by Tony Lindgren's avatar Tony Lindgren

ARM: OMAP2+: Fix ti_sysc_find_one_clockdomain to check for to_clk_hw_omap

We must bail out early if the clock is not hw_omap. Otherwise we will
try to access invalid address with hwclk->clkdm_name:

Unable to handle kernel paging request at virtual address ffffffff
Internal error: Oops: 27 [#1] ARM
...
(strcmp) from [<c011b348>] (clkdm_lookup+0x40/0x60)
[<c011b348>] (clkdm_lookup) from [<c011cb84>] (ti_sysc_clkdm_init+0x5c/0x64)
[<c011cb84>] (ti_sysc_clkdm_init) from [<c03680a8>] (sysc_probe+0x948/0x117c)
[<c03680a8>] (sysc_probe) from [<c03d0af4>] (platform_drv_probe+0x48/0x98)
...

Fixes: 2b2f7def ("bus: ti-sysc: Add support for missing clockdomain handling")
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent e709ed70
...@@ -306,10 +306,14 @@ static void __init dra7x_evm_mmc_quirk(void) ...@@ -306,10 +306,14 @@ static void __init dra7x_evm_mmc_quirk(void)
static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk) static struct clockdomain *ti_sysc_find_one_clockdomain(struct clk *clk)
{ {
struct clk_hw *hw = __clk_get_hw(clk);
struct clockdomain *clkdm = NULL; struct clockdomain *clkdm = NULL;
struct clk_hw_omap *hwclk; struct clk_hw_omap *hwclk;
hwclk = to_clk_hw_omap(__clk_get_hw(clk)); hwclk = to_clk_hw_omap(hw);
if (!omap2_clk_is_hw_omap(hw))
return NULL;
if (hwclk && hwclk->clkdm_name) if (hwclk && hwclk->clkdm_name)
clkdm = clkdm_lookup(hwclk->clkdm_name); clkdm = clkdm_lookup(hwclk->clkdm_name);
......
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