From: Rafał Miłecki Date: Wed, 7 Nov 2018 08:43:14 +0000 (+0100) Subject: mac80211: brcmfmac: backport firmware loading cleanup X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5932eb690f24c25b11119a55242dac4718fe8324;p=openwrt%2Fstaging%2Fluka.git mac80211: brcmfmac: backport firmware loading cleanup Signed-off-by: Rafał Miłecki --- diff --git a/package/kernel/mac80211/patches/brcm/320-v4.21-0001-brcmfmac-Remove-firmware-loading-code-duplication.patch b/package/kernel/mac80211/patches/brcm/320-v4.21-0001-brcmfmac-Remove-firmware-loading-code-duplication.patch new file mode 100644 index 0000000000..eca15a516e --- /dev/null +++ b/package/kernel/mac80211/patches/brcm/320-v4.21-0001-brcmfmac-Remove-firmware-loading-code-duplication.patch @@ -0,0 +1,102 @@ +From a1a3b762163868ad07a4499a73df324f40d5ab0b Mon Sep 17 00:00:00 2001 +From: Hans de Goede +Date: Wed, 10 Oct 2018 13:00:58 +0200 +Subject: [PATCH] brcmfmac: Remove firmware-loading code duplication + +brcmf_fw_request_next_item and brcmf_fw_request_done both have identical +code to complete the fw-request depending on the item-type. + +This commit adds a new brcmf_fw_complete_request helper removing this code +duplication. + +Signed-off-by: Hans de Goede +Signed-off-by: Kalle Valo +--- + .../broadcom/brcm80211/brcmfmac/firmware.c | 62 +++++++++++----------- + 1 file changed, 31 insertions(+), 31 deletions(-) + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c +@@ -504,6 +504,34 @@ fail: + return -ENOENT; + } + ++static int brcmf_fw_complete_request(const struct firmware *fw, ++ struct brcmf_fw *fwctx) ++{ ++ struct brcmf_fw_item *cur = &fwctx->req->items[fwctx->curpos]; ++ int ret = 0; ++ ++ brcmf_dbg(TRACE, "firmware %s %sfound\n", cur->path, fw ? "" : "not "); ++ ++ switch (cur->type) { ++ case BRCMF_FW_TYPE_NVRAM: ++ ret = brcmf_fw_request_nvram_done(fw, fwctx); ++ break; ++ case BRCMF_FW_TYPE_BINARY: ++ if (fw) ++ cur->binary = fw; ++ else ++ ret = -ENOENT; ++ break; ++ default: ++ /* something fishy here so bail out early */ ++ brcmf_err("unknown fw type: %d\n", cur->type); ++ release_firmware(fw); ++ ret = -EINVAL; ++ } ++ ++ return (cur->flags & BRCMF_FW_REQF_OPTIONAL) ? 0 : ret; ++} ++ + static int brcmf_fw_request_next_item(struct brcmf_fw *fwctx, bool async) + { + struct brcmf_fw_item *cur; +@@ -525,15 +553,7 @@ static int brcmf_fw_request_next_item(st + if (ret < 0) { + brcmf_fw_request_done(NULL, fwctx); + } else if (!async && fw) { +- brcmf_dbg(TRACE, "firmware %s %sfound\n", cur->path, +- fw ? "" : "not "); +- if (cur->type == BRCMF_FW_TYPE_BINARY) +- cur->binary = fw; +- else if (cur->type == BRCMF_FW_TYPE_NVRAM) +- brcmf_fw_request_nvram_done(fw, fwctx); +- else +- release_firmware(fw); +- ++ brcmf_fw_complete_request(fw, fwctx); + return -EAGAIN; + } + return 0; +@@ -547,28 +567,8 @@ static void brcmf_fw_request_done(const + + cur = &fwctx->req->items[fwctx->curpos]; + +- brcmf_dbg(TRACE, "enter: firmware %s %sfound\n", cur->path, +- fw ? "" : "not "); +- +- if (!fw) +- ret = -ENOENT; +- +- switch (cur->type) { +- case BRCMF_FW_TYPE_NVRAM: +- ret = brcmf_fw_request_nvram_done(fw, fwctx); +- break; +- case BRCMF_FW_TYPE_BINARY: +- cur->binary = fw; +- break; +- default: +- /* something fishy here so bail out early */ +- brcmf_err("unknown fw type: %d\n", cur->type); +- release_firmware(fw); +- ret = -EINVAL; +- goto fail; +- } +- +- if (ret < 0 && !(cur->flags & BRCMF_FW_REQF_OPTIONAL)) ++ ret = brcmf_fw_complete_request(fw, fwctx); ++ if (ret < 0) + goto fail; + + do { diff --git a/package/kernel/mac80211/patches/brcm/320-v4.21-0002-brcmfmac-Remove-recursion-from-firmware-load-error-h.patch b/package/kernel/mac80211/patches/brcm/320-v4.21-0002-brcmfmac-Remove-recursion-from-firmware-load-error-h.patch new file mode 100644 index 0000000000..f3da1df541 --- /dev/null +++ b/package/kernel/mac80211/patches/brcm/320-v4.21-0002-brcmfmac-Remove-recursion-from-firmware-load-error-h.patch @@ -0,0 +1,126 @@ +From 5b587496dc63595b71265d986ce69728c2724370 Mon Sep 17 00:00:00 2001 +From: Hans de Goede +Date: Wed, 10 Oct 2018 13:00:59 +0200 +Subject: [PATCH] brcmfmac: Remove recursion from firmware load error handling + +Before this commit brcmf_fw_request_done would call +brcmf_fw_request_next_item to load the next item, which on an error would +call brcmf_fw_request_done, which if the error is recoverable (*) will +then continue calling brcmf_fw_request_next_item for the next item again +which on an error will call brcmf_fw_request_done again... + +This does not blow up because we only have a limited number of items so +we never recurse too deep. But the recursion is still quite ugly and +frankly is giving me a headache, so lets fix this. + +This commit fixes this by removing brcmf_fw_request_next_item and by +making brcmf_fw_get_firmwares and brcmf_fw_request_done directly call +firmware_request_nowait resp. firmware_request themselves. + +*) brcmf_fw_request_nvram_done fallback path succeeds or + BRCMF_FW_REQF_OPTIONAL is set + +Signed-off-by: Hans de Goede +Signed-off-by: Kalle Valo +--- + .../broadcom/brcm80211/brcmfmac/firmware.c | 65 +++++++--------------- + 1 file changed, 19 insertions(+), 46 deletions(-) + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c +@@ -532,33 +532,6 @@ static int brcmf_fw_complete_request(con + return (cur->flags & BRCMF_FW_REQF_OPTIONAL) ? 0 : ret; + } + +-static int brcmf_fw_request_next_item(struct brcmf_fw *fwctx, bool async) +-{ +- struct brcmf_fw_item *cur; +- const struct firmware *fw = NULL; +- int ret; +- +- cur = &fwctx->req->items[fwctx->curpos]; +- +- brcmf_dbg(TRACE, "%srequest for %s\n", async ? "async " : "", +- cur->path); +- +- if (async) +- ret = request_firmware_nowait(THIS_MODULE, true, cur->path, +- fwctx->dev, GFP_KERNEL, fwctx, +- brcmf_fw_request_done); +- else +- ret = request_firmware(&fw, cur->path, fwctx->dev); +- +- if (ret < 0) { +- brcmf_fw_request_done(NULL, fwctx); +- } else if (!async && fw) { +- brcmf_fw_complete_request(fw, fwctx); +- return -EAGAIN; +- } +- return 0; +-} +- + static void brcmf_fw_request_done(const struct firmware *fw, void *ctx) + { + struct brcmf_fw *fwctx = ctx; +@@ -568,26 +541,19 @@ static void brcmf_fw_request_done(const + cur = &fwctx->req->items[fwctx->curpos]; + + ret = brcmf_fw_complete_request(fw, fwctx); +- if (ret < 0) +- goto fail; +- +- do { +- if (++fwctx->curpos == fwctx->req->n_items) { +- ret = 0; +- goto done; +- } + +- ret = brcmf_fw_request_next_item(fwctx, false); +- } while (ret == -EAGAIN); +- +- return; ++ while (ret == 0 && ++fwctx->curpos < fwctx->req->n_items) { ++ cur = &fwctx->req->items[fwctx->curpos]; ++ request_firmware(&fw, cur->path, fwctx->dev); ++ ret = brcmf_fw_complete_request(fw, ctx); ++ } + +-fail: +- brcmf_dbg(TRACE, "failed err=%d: dev=%s, fw=%s\n", ret, +- dev_name(fwctx->dev), cur->path); +- brcmf_fw_free_request(fwctx->req); +- fwctx->req = NULL; +-done: ++ if (ret) { ++ brcmf_dbg(TRACE, "failed err=%d: dev=%s, fw=%s\n", ret, ++ dev_name(fwctx->dev), cur->path); ++ brcmf_fw_free_request(fwctx->req); ++ fwctx->req = NULL; ++ } + fwctx->done(fwctx->dev, ret, fwctx->req); + kfree(fwctx); + } +@@ -611,7 +577,9 @@ int brcmf_fw_get_firmwares(struct device + void (*fw_cb)(struct device *dev, int err, + struct brcmf_fw_request *req)) + { ++ struct brcmf_fw_item *first = &req->items[0]; + struct brcmf_fw *fwctx; ++ int ret; + + brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(dev)); + if (!fw_cb) +@@ -628,7 +596,12 @@ int brcmf_fw_get_firmwares(struct device + fwctx->req = req; + fwctx->done = fw_cb; + +- brcmf_fw_request_next_item(fwctx, true); ++ ret = request_firmware_nowait(THIS_MODULE, true, first->path, ++ fwctx->dev, GFP_KERNEL, fwctx, ++ brcmf_fw_request_done); ++ if (ret < 0) ++ brcmf_fw_request_done(NULL, fwctx); ++ + return 0; + } + diff --git a/package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch b/package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch index e70738322d..ed95e7a240 100644 --- a/package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch +++ b/package/kernel/mac80211/patches/brcm/860-brcmfmac-register-wiphy-s-during-module_init.patch @@ -31,33 +31,37 @@ Signed-off-by: Rafał Miłecki }; static void brcmf_fw_request_done(const struct firmware *fw, void *ctx); -@@ -589,6 +590,8 @@ fail: - fwctx->req = NULL; - done: +@@ -555,6 +556,8 @@ static void brcmf_fw_request_done(const + fwctx->req = NULL; + } fwctx->done(fwctx->dev, ret, fwctx->req); + if (fwctx->completion) + complete(fwctx->completion); kfree(fwctx); } -@@ -612,6 +615,8 @@ int brcmf_fw_get_firmwares(struct device - struct brcmf_fw_request *req)) +@@ -579,6 +582,7 @@ int brcmf_fw_get_firmwares(struct device { + struct brcmf_fw_item *first = &req->items[0]; struct brcmf_fw *fwctx; + struct completion completion; -+ int err; + int ret; brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(dev)); - if (!fw_cb) -@@ -628,7 +633,14 @@ int brcmf_fw_get_firmwares(struct device +@@ -595,6 +599,9 @@ int brcmf_fw_get_firmwares(struct device + fwctx->dev = dev; fwctx->req = req; fwctx->done = fw_cb; - ++ + init_completion(&completion); + fwctx->completion = &completion; -+ - brcmf_fw_request_next_item(fwctx, true); -+ + + ret = request_firmware_nowait(THIS_MODULE, true, first->path, + fwctx->dev, GFP_KERNEL, fwctx, +@@ -602,6 +609,9 @@ int brcmf_fw_get_firmwares(struct device + if (ret < 0) + brcmf_fw_request_done(NULL, fwctx); + + wait_for_completion_timeout(fwctx->completion, msecs_to_jiffies(5000)); + fwctx->completion = NULL; +