From: Hector Martin <marcan@marcan.st>
To: Kalle Valo <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>, Arend van Spriel <aspriel@gmail.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Wright Feng <wright.feng@infineon.com>,
Dmitry Osipenko <digetx@gmail.com>
Cc: "Hector Martin" <marcan@marcan.st>,
"Sven Peter" <sven@svenpeter.dev>,
"Alyssa Rosenzweig" <alyssa@rosenzweig.io>,
"Mark Kettenis" <kettenis@openbsd.org>,
"Rafał Miłecki" <zajec5@gmail.com>,
"Pieter-Paul Giesberts" <pieter-paul.giesberts@broadcom.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Hans de Goede" <hdegoede@redhat.com>,
"John W. Linville" <linville@tuxdriver.com>,
"brian m. carlson" <sandals@crustytoothpaste.net>,
"Andy Shevchenko" <andy.shevchenko@gmail.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com,
SHA-cyfmac-dev-list@infineon.com,
"Arend van Spriel" <arend.vanspriel@broadcom.com>,
stable@vger.kernel.org
Subject: [PATCH v4 3/9] brcmfmac: firmware: Do not crash on a NULL board_type
Date: Tue, 1 Feb 2022 01:07:07 +0900 [thread overview]
Message-ID: <20220131160713.245637-4-marcan@marcan.st> (raw)
In-Reply-To: <20220131160713.245637-1-marcan@marcan.st>
This unbreaks support for USB devices, which do not have a board_type
to create an alt_path out of and thus were running into a NULL
dereference.
Fixes: 5ff013914c62 ("brcmfmac: firmware: Allow per-board firmware binaries")
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Hector Martin <marcan@marcan.st>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
index 1001c8888bfe..63821856bbe1 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
@@ -599,6 +599,9 @@ static char *brcm_alt_fw_path(const char *path, const char *board_type)
char alt_path[BRCMF_FW_NAME_LEN];
char suffix[5];
+ if (!board_type)
+ return NULL;
+
strscpy(alt_path, path, BRCMF_FW_NAME_LEN);
/* At least one character + suffix */
if (strlen(alt_path) < 5)
--
2.33.0
next prev parent reply other threads:[~2022-01-31 16:08 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-31 16:07 [PATCH v4 0/9] misc brcmfmac fixes (M1/T2 series spin-off) Hector Martin
2022-01-31 16:07 ` [PATCH v4 1/9] brcmfmac: pcie: Release firmwares in the brcmf_pcie_setup error path Hector Martin
2022-01-31 16:26 ` Andy Shevchenko
2022-02-01 12:27 ` Kalle Valo
2022-01-31 16:07 ` [PATCH v4 2/9] brcmfmac: firmware: Allocate space for default boardrev in nvram Hector Martin
2022-01-31 16:26 ` Andy Shevchenko
2022-01-31 16:07 ` Hector Martin [this message]
2022-01-31 16:28 ` [PATCH v4 3/9] brcmfmac: firmware: Do not crash on a NULL board_type Andy Shevchenko
2022-01-31 16:49 ` Kalle Valo
2022-01-31 16:53 ` Hector Martin
2022-02-01 5:12 ` Kalle Valo
2022-01-31 17:49 ` Andy Shevchenko
2022-01-31 16:07 ` [PATCH v4 4/9] brcmfmac: pcie: Declare missing firmware files in pcie.c Hector Martin
2022-01-31 16:07 ` [PATCH v4 5/9] brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio Hector Martin
2022-01-31 16:07 ` [PATCH v4 6/9] brcmfmac: pcie: Fix crashes due to early IRQs Hector Martin
2022-01-31 16:25 ` Andy Shevchenko
2022-01-31 16:07 ` [PATCH v4 7/9] brcmfmac: of: Use devm_kstrdup for board_type & check for errors Hector Martin
2022-01-31 22:33 ` Piotr Masłowski
2022-01-31 16:07 ` [PATCH v4 8/9] brcmfmac: fwil: Constify iovar name arguments Hector Martin
2022-01-31 16:07 ` [PATCH v4 9/9] brcmfmac: pcie: Read the console on init and shutdown Hector Martin
2022-01-31 16:25 ` Andy Shevchenko
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