From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Sat, 19 Apr 2008 15:52:12 +0000 (+0200)
Subject: ssb: Fix all-ones boardflags
X-Git-Tag: firefly_0821_release~20572^2~74^2~9
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4503183aa32e6886400d82282292934fa64a81b0;p=firefly-linux-kernel-4.4.55.git

ssb: Fix all-ones boardflags

In the SSB SPROM a field set to all ones means the value
is not defined in the SPROM.
In case of the boardflags, we need to set them to zero
to avoid confusing drivers. Drivers will only check the
flags by ANDing.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Gabor Stefanik <netrolller.3d@gmail.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/ssb/pci.c b/drivers/ssb/pci.c
index 904b1a8d0885..57c4ccfab1ee 100644
--- a/drivers/ssb/pci.c
+++ b/drivers/ssb/pci.c
@@ -484,6 +484,11 @@ static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,
 			goto unsupported;
 	}
 
+	if (out->boardflags_lo == 0xFFFF)
+		out->boardflags_lo = 0;  /* per specs */
+	if (out->boardflags_hi == 0xFFFF)
+		out->boardflags_hi = 0;  /* per specs */
+
 	return 0;
 unsupported:
 	ssb_printk(KERN_WARNING PFX "Unsupported SPROM revision %d "