[PATCH 5.10 120/599] brcmfmac: firmware: Allocate space for default boardrev in nvram

[Greg Kroah-Hartman]

From: Hector Martin <marcan@xxxxxxxxx>

commit d19d8e3ba256f81ea4a27209dbbd1f0a00ef1903 upstream.

If boardrev is missing from the NVRAM we add a default one, but this
might need more space in the output buffer than was allocated. Ensure
we have enough padding for this in the buffer.

Fixes: 46f2b38a91b0 ("brcmfmac: insert default boardrev in nvram data if missing")
Reviewed-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220131160713.245637-3-marcan@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
@@ -207,6 +207,8 @@ static int brcmf_init_nvram_parser(struc
 		size = BRCMF_FW_MAX_NVRAM_SIZE;
 	else
 		size = data_len;
+	/* Add space for properties we may add */
+	size += strlen(BRCMF_FW_DEFAULT_BOARDREV) + 1;
 	/* Alloc for extra 0 byte + roundup by 4 + length field */
 	size += 1 + 3 + sizeof(u32);
 	nvp->nvram = kzalloc(size, GFP_KERNEL);