wifi: brcmfmac: Do not set reset vector when signatures are in use

With secure boot, the vector is not accessible and trying to write it
triggers PCIe errors. Skip it in that case.

Signed-off-by: Hector Martin <marcan@marcan.st>

Author: marcan

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c

@@ -400,6 +400,7 @@ struct brcmf_pciedev_info {
 	void __iomem *regs;
 	void __iomem *tcm;
 	u32 fw_size;
+	bool skip_reset_vector;
 	struct brcmf_chip *ci;
 	u32 coreid;
 	struct brcmf_pcie_shared_info shared;
@@ -1964,6 +1965,8 @@ static int brcmf_pcie_add_signature(struct brcmf_pciedev_info *devinfo,
 	if (err)
 		return err;
 
+	devinfo->skip_reset_vector = true;
+
 	return 0;
 }
 
@@ -2204,7 +2207,8 @@ static void brcmf_pcie_buscore_activate(void *ctx, struct brcmf_chip *chip,
 {
 	struct brcmf_pciedev_info *devinfo = (struct brcmf_pciedev_info *)ctx;
 
-	brcmf_pcie_write_tcm32(devinfo, 0, rstvec);
+	if (!devinfo->skip_reset_vector)
+		brcmf_pcie_write_tcm32(devinfo, 0, rstvec);
 }