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https://github.com/openwrt/openwrt.git
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82 lines
2.6 KiB
Diff
82 lines
2.6 KiB
Diff
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From 0b5c0305e57ca940713bcb2b202fd2b412c62f31 Mon Sep 17 00:00:00 2001
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From: Arend Van Spriel <arend.vanspriel@broadcom.com>
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Date: Tue, 3 Apr 2018 10:18:15 +0200
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Subject: [PATCH] brcmfmac: fix firmware request processing if nvram load fails
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When nvram loading fails a double free occurred. Fix this and reorg the
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code a little.
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Fixes: d09ae51a4b67 ("brcmfmac: pass struct in brcmf_fw_get_firmwares()")
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Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
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Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/firmware.c | 36 ++++++++++++----------
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1 file changed, 20 insertions(+), 16 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
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@@ -459,7 +459,7 @@ static void brcmf_fw_free_request(struct
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kfree(req);
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}
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-static void brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx)
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+static int brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx)
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{
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struct brcmf_fw *fwctx = ctx;
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struct brcmf_fw_item *cur;
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@@ -498,13 +498,10 @@ static void brcmf_fw_request_nvram_done(
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brcmf_dbg(TRACE, "nvram %p len %d\n", nvram, nvram_length);
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cur->nv_data.data = nvram;
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cur->nv_data.len = nvram_length;
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- return;
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+ return 0;
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fail:
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- brcmf_dbg(TRACE, "failed: dev=%s\n", dev_name(fwctx->dev));
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- fwctx->done(fwctx->dev, -ENOENT, NULL);
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- brcmf_fw_free_request(fwctx->req);
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- kfree(fwctx);
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+ return -ENOENT;
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}
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static int brcmf_fw_request_next_item(struct brcmf_fw *fwctx, bool async)
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@@ -553,20 +550,27 @@ static void brcmf_fw_request_done(const
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brcmf_dbg(TRACE, "enter: firmware %s %sfound\n", cur->path,
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fw ? "" : "not ");
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- if (fw) {
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- if (cur->type == BRCMF_FW_TYPE_BINARY)
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- cur->binary = fw;
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- else if (cur->type == BRCMF_FW_TYPE_NVRAM)
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- brcmf_fw_request_nvram_done(fw, fwctx);
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- else
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- release_firmware(fw);
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- } else if (cur->type == BRCMF_FW_TYPE_NVRAM) {
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- brcmf_fw_request_nvram_done(NULL, fwctx);
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- } else if (!(cur->flags & BRCMF_FW_REQF_OPTIONAL)) {
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+ if (!fw)
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ret = -ENOENT;
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+
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+ switch (cur->type) {
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+ case BRCMF_FW_TYPE_NVRAM:
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+ ret = brcmf_fw_request_nvram_done(fw, fwctx);
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+ break;
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+ case BRCMF_FW_TYPE_BINARY:
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+ cur->binary = fw;
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+ break;
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+ default:
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+ /* something fishy here so bail out early */
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+ brcmf_err("unknown fw type: %d\n", cur->type);
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+ release_firmware(fw);
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+ ret = -EINVAL;
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goto fail;
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}
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+ if (ret < 0 && !(cur->flags & BRCMF_FW_REQF_OPTIONAL))
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+ goto fail;
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+
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do {
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if (++fwctx->curpos == fwctx->req->n_items) {
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ret = 0;
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