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Re: [PATCH v2] brcmfmac: fix CLM load error for legacy chips when user helper is enabled

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On 1/12/2018 8:44 AM, Wright Feng wrote:
For legacy chips without CLM blob files, kernel with user helper function
returns -EAGAIN when we request_firmware() for blob file. In this case,
brcmf_bus_started gets error and failed to bring up legacy chips.
Because of that, we should continue with CLM data currently present in
firmware if getting -EAGAIN when doing request_firmware().

Signed-off-by: Wright Feng <wright.feng@xxxxxxxxxxx>
---
v2: remove retry from patch v1
---
  drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
index 6a59d06..0baab4c 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
@@ -182,7 +182,7 @@ static int brcmf_c_process_clm_blob(struct brcmf_if *ifp)

  	err = request_firmware(&clm, clm_name, dev);
  	if (err) {
-		if (err == -ENOENT) {
+		if (err == -ENOENT || err == -EAGAIN) {
  			brcmf_dbg(INFO, "continue with CLM data currently present in firmware\n");
  			return 0;
  		}

Hi Wright,

Why don't we just fall-back to "CLM in firmware" regardless of the error code? Also it might be better to use brcmf_info() instead of brcmf_dbg(INFO, ..).

Regards,
Arend



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