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| author | Robin Getz <robin.getz@analog.com> | 2009-04-23 14:15:04 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 06:11:28 -0400 |
| commit | bc4d6f36db4b24bf328a5fd70038a2e609b9f028 (patch) | |
| tree | 68a2eb845ea54fe14721a8a4a18d116fdb0d0748 /arch/blackfin | |
| parent | fecbd7366bf5a39eaae2c03541f0b412f319534f (diff) | |
| download | op-kernel-dev-bc4d6f36db4b24bf328a5fd70038a2e609b9f028.zip op-kernel-dev-bc4d6f36db4b24bf328a5fd70038a2e609b9f028.tar.gz | |
Blackfin: document anomaly 05000234 workaround
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>
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | 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 |
