From: Franky Lin <frankyl@broadcom.com>
Date: Wed, 25 Nov 2015 10:32:40 +0000 (+0100)
Subject: brcmfmac: no retries on rxglom superframe errors
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=64d66c30c37e1f5de46da94d49bfae8ad2496d20;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

brcmfmac: no retries on rxglom superframe errors

Aborting the current read attempt on the superframe also removes the
packet from the pipeline. Retries should not be attempted on the next
packet since it would not be a superframe(either a superframe descriptor
or other data packet) and should not be handled by brcmf_sdio_rxglom

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
index 01f359efe27e..bfadc97ab219 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
@@ -460,7 +460,6 @@ struct brcmf_sdio {
 
 	struct sk_buff *glomd;	/* Packet containing glomming descriptor */
 	struct sk_buff_head glom; /* Packet list for glommed superframe */
-	uint glomerr;		/* Glom packet read errors */
 
 	u8 *rxbuf;		/* Buffer for receiving control packets */
 	uint rxblen;		/* Allocated length of rxbuf */
@@ -1654,20 +1653,15 @@ static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
 		sdio_release_host(bus->sdiodev->func[1]);
 		bus->sdcnt.f2rxdata++;
 
-		/* On failure, kill the superframe, allow a couple retries */
+		/* On failure, kill the superframe */
 		if (errcode < 0) {
 			brcmf_err("glom read of %d bytes failed: %d\n",
 				  dlen, errcode);
 
 			sdio_claim_host(bus->sdiodev->func[1]);
-			if (bus->glomerr++ < 3) {
-				brcmf_sdio_rxfail(bus, true, true);
-			} else {
-				bus->glomerr = 0;
-				brcmf_sdio_rxfail(bus, true, false);
-				bus->sdcnt.rxglomfail++;
-				brcmf_sdio_free_glom(bus);
-			}
+			brcmf_sdio_rxfail(bus, true, false);
+			bus->sdcnt.rxglomfail++;
+			brcmf_sdio_free_glom(bus);
 			sdio_release_host(bus->sdiodev->func[1]);
 			return 0;
 		}
@@ -1708,19 +1702,11 @@ static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
 		}
 
 		if (errcode) {
-			/* Terminate frame on error, request
-				 a couple retries */
+			/* Terminate frame on error */
 			sdio_claim_host(bus->sdiodev->func[1]);
-			if (bus->glomerr++ < 3) {
-				/* Restore superframe header space */
-				skb_push(pfirst, sfdoff);
-				brcmf_sdio_rxfail(bus, true, true);
-			} else {
-				bus->glomerr = 0;
-				brcmf_sdio_rxfail(bus, true, false);
-				bus->sdcnt.rxglomfail++;
-				brcmf_sdio_free_glom(bus);
-			}
+			brcmf_sdio_rxfail(bus, true, false);
+			bus->sdcnt.rxglomfail++;
+			brcmf_sdio_free_glom(bus);
 			sdio_release_host(bus->sdiodev->func[1]);
 			bus->cur_read.len = 0;
 			return 0;