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| author | Michael Chan <mchan@broadcom.com> | 2007-06-04 21:22:24 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-06-07 13:38:37 -0700 |
| commit | 641bdcd56c8bb2110a31da846b2752b11a644050 (patch) | |
| tree | 3bacb70bde63e20d2a7003bed4aad9020401be9c /drivers/net/bnx2.c | |
| parent | 7947b20ebae785ba25154aa1a9a00a98a22de75a (diff) | |
| download | linux-641bdcd56c8bb2110a31da846b2752b11a644050.tar.gz | |
[BNX2]: Add missing wait in bnx2_init_5709_context().
For correctness, we need to wait for the MEM_INIT bit to be cleared in the BNX2_CTX_COMMAND register before proceeding. [Added return -EBUSY when the MEM_INIT bit doesn't clear, suggested by Jeff Garzik.] Signed-off-by: Michael Chan <mchan@broadcom.com> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2.c')
| -rw-r--r-- | drivers/net/bnx2.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 9789f05cbc99..9eba7a2635ad 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -1778,6 +1778,15 @@ bnx2_init_5709_context(struct bnx2 *bp) val = BNX2_CTX_COMMAND_ENABLED | BNX2_CTX_COMMAND_MEM_INIT | (1 << 12); val |= (BCM_PAGE_BITS - 8) << 16; REG_WR(bp, BNX2_CTX_COMMAND, val); + for (i = 0; i < 10; i++) { + val = REG_RD(bp, BNX2_CTX_COMMAND); + if (!(val & BNX2_CTX_COMMAND_MEM_INIT)) + break; + udelay(2); + } + if (val & BNX2_CTX_COMMAND_MEM_INIT) + return -EBUSY; + for (i = 0; i < bp->ctx_pages; i++) { int j; @@ -3696,9 +3705,11 @@ bnx2_init_chip(struct bnx2 *bp) /* Initialize context mapping and zero out the quick contexts. The * context block must have already been enabled. */ - if (CHIP_NUM(bp) == CHIP_NUM_5709) - bnx2_init_5709_context(bp); - else + if (CHIP_NUM(bp) == CHIP_NUM_5709) { + rc = bnx2_init_5709_context(bp); + if (rc) + return rc; + } else bnx2_init_context(bp); if ((rc = bnx2_init_cpus(bp)) != 0) |