mac80211: backport one missed brcmfmac NVRAM-related patch

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 45812

package/kernel/mac80211/patches/378-brcmfmac-allow-NVRAM-values-to-contain-spaces.patch

@@ -0,0 +1,50 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
+Date: Sat, 23 May 2015 09:15:33 +0200
+Subject: [PATCH] brcmfmac: allow NVRAM values to contain spaces
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Platform NVRAMs often contain values with spaces. Even if right now most
+firmware-supported entries are simple values, we shouldn't reject these
+with spaces. It was semi-confirmed by Broadcom in the early patch adding
+support for platform NVRAMs.
+
+Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
+Acked-by: Arend van Spriel <arend@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+
+--- a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c
+@@ -66,6 +66,12 @@ struct nvram_parser {
+ 	bool multi_dev_v2;
+ };
+ 
++/**
++ * is_nvram_char() - check if char is a valid one for NVRAM entry
++ *
++ * It accepts all printable ASCII chars except for '#' which opens a comment.
++ * Please note that ' ' (space) while accepted is not a valid key name char.
++ */
+ static bool is_nvram_char(char c)
+ {
+ 	/* comment marker excluded */
+@@ -73,7 +79,7 @@ static bool is_nvram_char(char c)
+ 		return false;
+ 
+ 	/* key and value may have any other readable character */
+-	return (c > 0x20 && c < 0x7f);
++	return (c >= 0x20 && c < 0x7f);
+ }
+ 
+ static bool is_whitespace(char c)
+@@ -120,7 +126,7 @@ static enum nvram_parser_state brcmf_nvr
+ 			nvp->multi_dev_v1 = true;
+ 		if (strncmp(&nvp->fwnv->data[nvp->entry], "pcie/", 5) == 0)
+ 			nvp->multi_dev_v2 = true;
+-	} else if (!is_nvram_char(c)) {
++	} else if (!is_nvram_char(c) || c == ' ') {
+ 		brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n",
+ 			  nvp->line, nvp->column);
+ 		return COMMENT;