From ef7dcaf1e7bbf7adaaf45cac1c1d208929fb25e5 Mon Sep 17 00:00:00 2001 From: Aaron Wu Date: Wed, 22 Oct 2014 13:45:58 +0800 Subject: pm: sometimes wake up from suspend to RAM would fail Sometimes it fails to wake up from suspend to RAM, this is because we would flush the data cache by assemble command FLUSHINV before suspend to RAM, and there is a delay between this command execution and cache flush completion. Add a 1uS delay to works around this. Signed-off-by: Aaron Wu --- arch/blackfin/mach-common/pm.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/blackfin/mach-common') diff --git a/arch/blackfin/mach-common/pm.c b/arch/blackfin/mach-common/pm.c index 1387a94bcfd5..a66d979ec651 100644 --- a/arch/blackfin/mach-common/pm.c +++ b/arch/blackfin/mach-common/pm.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -180,6 +181,7 @@ int bfin_pm_suspend_mem_enter(void) #if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK) flushinv_all_dcache(); + udelay(1); #endif _disable_dcplb(); _disable_icplb(); -- cgit v1.2.1 From 4f650a5966038f439c5f8d7d85dcc6b3a77a4e7c Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 13 Apr 2015 22:02:58 +0800 Subject: blackfin: Wire up missing syscalls MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The related syscalls are below which may cause samples/kdbus building break in next-20150401 tree, the related information and error: CALL scripts/checksyscalls.sh :1223:2: warning: #warning syscall kcmp not implemented [-Wcpp] :1226:2: warning: #warning syscall finit_module not implemented [-Wcpp] :1229:2: warning: #warning syscall sched_setattr not implemented [-Wcpp] :1232:2: warning: #warning syscall sched_getattr not implemented [-Wcpp] :1235:2: warning: #warning syscall renameat2 not implemented [-Wcpp] :1238:2: warning: #warning syscall seccomp not implemented [-Wcpp] :1241:2: warning: #warning syscall getrandom not implemented [-Wcpp] :1244:2: warning: #warning syscall memfd_create not implemented [-Wcpp] :1247:2: warning: #warning syscall bpf not implemented [-Wcpp] :1250:2: warning: #warning syscall execveat not implemented [-Wcpp] [...] HOSTCC samples/kdbus/kdbus-workers samples/kdbus/kdbus-workers.c: In function ‘prime_new’: samples/kdbus/kdbus-workers.c:930:18: error: ‘__NR_memfd_create’ undeclared (first use in this function) p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC); ^ samples/kdbus/kdbus-workers.c:930:18: note: each undeclared identifier is reported only once for each function it appears in Signed-off-by: Chen Gang --- arch/blackfin/mach-common/entry.S | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/blackfin/mach-common') diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 86b5a095c5a1..8d9431e22e8c 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -1694,6 +1694,16 @@ ENTRY(_sys_call_table) .long _sys_sendmmsg /* 380 */ .long _sys_process_vm_readv .long _sys_process_vm_writev + .long _sys_kcmp + .long _sys_finit_module + .long _sys_sched_setattr /* 385 */ + .long _sys_sched_getattr + .long _sys_renameat2 + .long _sys_seccomp + .long _sys_getrandom + .long _sys_memfd_create /* 390 */ + .long _sys_bpf + .long _sys_execveat .rept NR_syscalls-(.-_sys_call_table)/4 .long _sys_ni_syscall -- cgit v1.2.1