Change in coreboot[master]: drivers/spi/winbond: Fix read protection bits

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/28731

Change subject: drivers/spi/winbond: Fix read protection bits
......................................................................

drivers/spi/winbond: Fix read protection bits

Don't care about SRPx and print correct protected range.

Change-Id: I051f1459c585a7ed6a4878dc217d11df5ef00d74
Signed-off-by: Patrick Rudolph 
---
M src/drivers/spi/winbond.c
1 file changed, 5 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/31/28731/1

diff --git a/src/drivers/spi/winbond.c b/src/drivers/spi/winbond.c
index a0e3884..ac7c2be 100644
--- a/src/drivers/spi/winbond.c
+++ b/src/drivers/spi/winbond.c
@@ -297,8 +297,6 @@

ret = spi_flash_cmd(&flash->spi, flash->status_cmd, &reg1_bp3.u,
    			    sizeof(reg1_bp3.u));
-		if (ret)
-			return ret;

if (reg1_bp3.sec) {
    		// FIXME: not supported
@@ -312,8 +310,6 @@

ret = spi_flash_cmd(&flash->spi, flash->status_cmd, &reg1_bp4.u,
    			    sizeof(reg1_bp4.u));
-		if (ret)
-			return ret;

bp = reg1_bp4.bp;
    	tb = reg1_bp4.tb;
@@ -321,6 +317,8 @@
    	// FIXME: not supported
    	return -1;
    }
+	if (ret)
+		return ret;

ret = spi_flash_cmd(&flash->spi, CMD_W25_RDSR2, &reg2.u,
    		    sizeof(reg2.u));
@@ -330,14 +328,15 @@
    winbond_bpbits_to_region(granularity, bp, tb, reg2.cmp, flash->size,
    			 &wp_region);

-	if (!reg2.srp1 || !wp_region.size) {
+	if (!region_sz(&wp_region)) {
    	printk(BIOS_DEBUG, "WINBOND: flash isn't protected\n");

return 0;
    }

printk(BIOS_DEBUG, "WINBOND: flash protected range 0x%08zx-0x%08zx\n",
-	       wp_region.offset, wp_region.size);
+	       region_offset(&wp_region),
+	       region_offset(&wp_region) + region_sz(&wp_region));

return region_is_subregion(&wp_region, region);
 }