From bc4d6f36db4b24bf328a5fd70038a2e609b9f028 Mon Sep 17 00:00:00 2001 From: Robin Getz Date: Thu, 23 Apr 2009 14:15:04 +0000 Subject: Blackfin: document anomaly 05000234 workaround Note the reason for using CHIPD over DSPID. Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger --- arch/blackfin/include/asm/processor.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/blackfin') diff --git a/arch/blackfin/include/asm/processor.h b/arch/blackfin/include/asm/processor.h index 0eece23..3040415 100644 --- a/arch/blackfin/include/asm/processor.h +++ b/arch/blackfin/include/asm/processor.h @@ -131,8 +131,8 @@ unsigned long get_wchan(struct task_struct *p); /* Get the Silicon Revision of the chip */ static inline uint32_t __pure bfin_revid(void) { - /* stored in the upper 4 bits */ - uint32_t revid = bfin_read_CHIPID() >> 28; + /* Always use CHIPID, to work around ANOMALY_05000234 */ + uint32_t revid = (bfin_read_CHIPID() & CHIPID_VERSION) >> 28; #ifdef CONFIG_BF52x /* ANOMALY_05000357 -- cgit v1.1