wifi: brcmfmac: fix regression for Broadcom PCIe wifi devices

BugLink: https://bugs.launchpad.net/bugs/2008946

commit ed05cb1 upstream.

A sanity check was introduced considering maximum flowrings above
256 as insane and effectively aborting the device probe. This
resulted in regression for number of users as the value turns out
to be sane after all.

Fixes: 2aca4f3 ("brcmfmac: return error when getting invalid max_flowrings from dongle")
Reported-by: chainofflowers <chainofflowers@posteo.net>
Link: https://lore.kernel.org/all/4781984.GXAFRqVoOG@luna/
Reported-by: Christian Marillat <marillat@debian.org>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216894
Cc: stable@vger.kernel.org
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230111112419.24185-1-arend.vanspriel@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

Author: Arend van Spriel

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

@@ -1109,7 +1109,7 @@ static int brcmf_pcie_init_ringbuffers(struct brcmf_pciedev_info *devinfo)
 				BRCMF_NROF_H2D_COMMON_MSGRINGS;
 		max_completionrings = BRCMF_NROF_D2H_COMMON_MSGRINGS;
 	}
-	if (max_flowrings > 256) {
+	if (max_flowrings > 512) {
 		brcmf_err(bus, "invalid max_flowrings(%d)\n", max_flowrings);
 		return -EIO;
 	}