| From | Mike Frysinger <> | Subject | [PATCH 22/62] Blackfin: document anomaly 05000234 workaround | Date | Fri, 5 Jun 2009 04:04:31 -0400 |
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From: Robin Getz <robin.getz@analog.com>
Note the reason for using CHIPD over DSPID.
Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- arch/blackfin/include/asm/processor.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
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 -- 1.6.3.1
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