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alistair23-linux
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bcma: only map wrapper if its address is available 

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>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
hifive-unleashed-5.1
Hauke Mehrtens 2014-08-22 08:44:52 +02:00 committed by John W. Linville
parent 89be7ceb80
commit ecf47e9bb7
2 changed files with 11 additions and 4 deletions
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4
drivers/bcma/host_soc.c
View File

@ -134,12 +134,16 @@ static void bcma_host_soc_block_write(struct bcma_device *core,
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);
}

11
drivers/bcma/scan.c
View File

@ -421,10 +421,13 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
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;