| Message ID | 1459551187-5992-2-git-send-email-nm@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index f397bd6bd6e3..2c04f2741476 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -274,6 +274,10 @@ static inline void omap5_irq_save_context(void) */ static void irq_save_context(void) { + /* DRA7 has no SAR to save */ + if (soc_is_dra7xx()) + return; + if (!sar_base) sar_base = omap4_get_sar_ram_base(); @@ -290,6 +294,9 @@ static void irq_sar_clear(void) { u32 val; u32 offset = SAR_BACKUP_STATUS_OFFSET; + /* DRA7 has no SAR to save */ + if (soc_is_dra7xx()) + return; if (soc_is_omap54xx()) offset = OMAP5_SAR_BACKUP_STATUS_OFFSET;
DRA7 has no SAR region for automated save and restore of wakeupgen, which does not make real since the SoC really does not do legacy OFF mode anymore. Further wakeupgen should never loose context in CSWR retention mode for MPU domain on DRA7 since that is the deepest state we will enter. So, just skip, instead of oopsing as follows while attemptint to enter suspend on BeagleBoard-X15. [ 55.589771] Unable to handle kernel paging request at virtual address 00002684 [ 55.589771] pgd = ec69c000 [...] [ 55.589771] [<c0123cc8>] (irq_notifier) from [<c015ad70>] (notifier_call_chain+0x4c/0x8c) [ 55.589771] [<c015ad70>] (notifier_call_chain) from [<c021469c>] (cpu_cluster_pm_enter+0x2c/0x78) [ 55.589771] [<c021469c>] (cpu_cluster_pm_enter) from [<c0514508>] (syscore_suspend+0xb8/0x31c) [ 55.589771] [<c0514508>] (syscore_suspend) from [<c0197d24>] (suspend_devices_and_enter+0x308/0x9e4) [ 55.589771] [<c0197d24>] (suspend_devices_and_enter) from [<c0198a40>] (pm_suspend+0x640/0x75c) [ 55.589771] [<c0198a40>] (pm_suspend) from [<c0196bcc>] (state_store+0x64/0xb8) [ 55.589771] [<c0196bcc>] (state_store) from [<c0307914>] (kernfs_fop_write+0xc0/0x1bc) [ 55.589771] [<c0307914>] (kernfs_fop_write) from [<c028ac80>] (__vfs_write+0x1c/0xd8) [ 55.589771] [<c028ac80>] (__vfs_write) from [<c028bb70>] (vfs_write+0x90/0x16c) [ 55.589771] [<c028bb70>] (vfs_write) from [<c028c890>] (SyS_write+0x44/0x9c) [ 55.589771] [<c028c890>] (SyS_write) from [<c0107840>] (ret_fast_syscall+0x0/0x1c) [...] Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/mach-omap2/omap-wakeupgen.c | 7 +++++++ 1 file changed, 7 insertions(+)