From 92b19ff50e8f242392d78b2aacc5b5b672f1796b Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 10 Aug 2015 23:07:06 -0400 Subject: cleanup IORESOURCE_CACHEABLE vs ioremap() Quoting Arnd: I was thinking the opposite approach and basically removing all uses of IORESOURCE_CACHEABLE from the kernel. There are only a handful of them.and we can probably replace them all with hardcoded ioremap_cached() calls in the cases they are actually useful. All existing usages of IORESOURCE_CACHEABLE call ioremap() instead of ioremap_nocache() if the resource is cacheable, however ioremap() is uncached by default. Clearly none of the existing usages care about the cacheability. Particularly devm_ioremap_resource() never worked as advertised since it always fell back to plain ioremap(). Clean this up as the new direction we want is to convert ioremap_() usages to memremap(..., flags). Suggested-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Signed-off-by: Dan Williams --- drivers/scsi/mvsas/mv_init.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) (limited to 'drivers/scsi/mvsas/mv_init.c') diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index d40d734aa53a..e654b5cec69e 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -324,13 +324,9 @@ int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex) goto err_out; res_flag_ex = pci_resource_flags(pdev, bar_ex); - if (res_flag_ex & IORESOURCE_MEM) { - if (res_flag_ex & IORESOURCE_CACHEABLE) - mvi->regs_ex = ioremap(res_start, res_len); - else - mvi->regs_ex = ioremap_nocache(res_start, - res_len); - } else + if (res_flag_ex & IORESOURCE_MEM) + mvi->regs_ex = ioremap(res_start, res_len); + else mvi->regs_ex = (void *)res_start; if (!mvi->regs_ex) goto err_out; @@ -342,10 +338,7 @@ int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex) goto err_out; res_flag = pci_resource_flags(pdev, bar); - if (res_flag & IORESOURCE_CACHEABLE) - mvi->regs = ioremap(res_start, res_len); - else - mvi->regs = ioremap_nocache(res_start, res_len); + mvi->regs = ioremap(res_start, res_len); if (!mvi->regs) { if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM)) -- cgit