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Subject[PATCH 22/62] Blackfin: document anomaly 05000234 workaround
Date
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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