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From c6516d2c672450fb27783866397a487511d90bba Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Fri, 22 Aug 2014 08:44:52 +0200
Subject: [PATCH 08/17] bcma: only map wrapper if its address is available
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The Chipcommon B core does not have a wrap address and it would fail here.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
drivers/bcma/host_soc.c | 4 ++++
drivers/bcma/scan.c | 11 +++++++----
2 files changed, 11 insertions(+), 4 deletions(-)
--- a/drivers/bcma/host_soc.c
+++ b/drivers/bcma/host_soc.c
@@ -137,12 +137,16 @@ static void bcma_host_soc_block_write(st
static u32 bcma_host_soc_aread32(struct bcma_device *core, u16 offset)
{
+ if (WARN_ONCE(!core->io_wrap, "Accessed core has no wrapper/agent\n"))
+ return ~0;
return readl(core->io_wrap + offset);
}
static void bcma_host_soc_awrite32(struct bcma_device *core, u16 offset,
u32 value)
{
+ if (WARN_ONCE(!core->io_wrap, "Accessed core has no wrapper/agent\n"))
+ return;
writel(value, core->io_wrap + offset);
}
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -421,10 +421,13 @@ static int bcma_get_next_core(struct bcm
core->io_addr = ioremap_nocache(core->addr, BCMA_CORE_SIZE);
if (!core->io_addr)
return -ENOMEM;
- core->io_wrap = ioremap_nocache(core->wrap, BCMA_CORE_SIZE);
- if (!core->io_wrap) {
- iounmap(core->io_addr);
- return -ENOMEM;
+ if (core->wrap) {
+ core->io_wrap = ioremap_nocache(core->wrap,
+ BCMA_CORE_SIZE);
+ if (!core->io_wrap) {
+ iounmap(core->io_addr);
+ return -ENOMEM;
+ }
}
}
return 0;
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