[PATCH 5/6] powerpc/powernv: OPAL dump support standardise OPAL_BUSY delays
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STALE3129d
SUPERSEDED
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2018-04-05 08:16:14
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Status: Superseded by v2 (posted 2018-04-09). [go to v2]
Revision v1 (2 revisions archived).
Revisions (2)
- v1 current
- v2 [diff against previous]
Convert to using the standard delay poll/delay form. The dump code: - Did not previously delay or sleep in the OPAL_BUSY case. - Used a 20ms sleep. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/platforms/powernv/opal-dump.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c
index 0dc8fa4e0af2..603c4ffdb45c 100644
--- a/arch/powerpc/platforms/powernv/opal-dump.c
+++ b/arch/powerpc/platforms/powernv/opal-dump.c@@ -264,8 +264,10 @@ static int64_t dump_read_data(struct dump_obj *dump) while (rc == OPAL_BUSY || rc == OPAL_BUSY_EVENT) { rc = opal_dump_read(dump->id, addr); if (rc == OPAL_BUSY_EVENT) { + msleep(OPAL_BUSY_DELAY_MS); opal_poll_events(NULL); - msleep(20); + } else if (rc == OPAL_BUSY) { + msleep(OPAL_BUSY_DELAY_MS); } }
--
2.16.3