[PATCH 55/61] net/qede/base: prevent DMAE transactions during recovery
From: Rasesh Mody <hidden>
Date: 2017-02-27 07:58:41
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Prevent DMA engine transactions during recovery phase. Signed-off-by: Rasesh Mody <redacted> --- drivers/net/qede/base/ecore_hw.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/net/qede/base/ecore_hw.c b/drivers/net/qede/base/ecore_hw.c
index 2c47f6b..9e65ddf 100644
--- a/drivers/net/qede/base/ecore_hw.c
+++ b/drivers/net/qede/base/ecore_hw.c@@ -774,6 +774,17 @@ static enum _ecore_status_t ecore_dmae_operation_wait(struct ecore_hwfn *p_hwfn) enum _ecore_status_t ecore_status = ECORE_SUCCESS; u32 offset = 0; + if (p_hwfn->p_dev->recov_in_prog) { + DP_VERBOSE(p_hwfn, ECORE_MSG_HW, + "Recovery is in progress. Avoid DMAE transaction [{src: addr 0x%lx, type %d}, {dst: addr 0x%lx, type %d}, size %d].\n", + src_addr, src_type, dst_addr, dst_type, + size_in_dwords); + /* Return success to let the flow to be completed successfully + * w/o any error handling. + */ + return ECORE_SUCCESS; + } + ecore_dmae_opcode(p_hwfn, (src_type == ECORE_DMAE_ADDRESS_GRC), (dst_type == ECORE_DMAE_ADDRESS_GRC), p_params);
--
1.7.10.3