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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 20:25:32 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 20:25:32 +0200
commit8ef50901d3c619127858b7d7f614fcab45e09d6b (patch)
treee75a0d48029d4a5857033e4edf1cd572a5a3fc62 /drivers/char
parentdrivers/net/xen-netfront.c: Use DIV_ROUND_UP (diff)
parentMerge branch 'fixes' into for-linus (diff)
downloadlinux-8ef50901d3c619127858b7d7f614fcab45e09d6b.tar.xz
linux-8ef50901d3c619127858b7d7f614fcab45e09d6b.zip
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (51 commits) [ARM] 5308/1: Fix Viper ISA IRQ handling [ARM] 5307/1: pxa: fix CM-X2XX PCMCIA build error [ARM] 5306/1: pxa: fix build error on CM-X270 [ARM] 5302/1: ARM: OMAP: Revert omap3 WDT changes to avoid merge conflict [ARM] 5305/1: ARM: OMAP: Fix compile of McBSP by removing unnecessary check [ARM] 5301/1: ARM: OMAP: Add missing irq defines ARM: OMAP3: Add default kernel config for OMAP LDP ARM: OMAP3: Add basic board support for OMAP LDP ARM: OMAP3: Defconfig for the Gumstix Overo board (rev 3) ARM: OMAP3: Add support for the Gumstix Overo board (rev 3) ARM: OMAP3: Add Beagle defconfig ARM: OMAP3: Add minimal Beagle board support ARM: OMAP3: Add minimal omap3430 support ARM: OMAP2: Fix sparse, checkpatch warnings in OMAP2/3 IRQ code ARM: OMAP: Fixes to omap_mcbsp_request function ARM: OMAP: Add support for OMAP2430 in McBSP ARM: OMAP: Add support for McBSP devices 3 - 5 on 34xx ARM: OMAP: Allocate McBSP devices dynamically Fix sections for omap-mcbsp platform driver [ARM] S3C24XX: Additional include moves ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/omap-rng.c33
1 files changed, 25 insertions, 8 deletions
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 51738bdd834e..d4e7dca06e4f 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -118,18 +118,21 @@ static int __init omap_rng_probe(struct platform_device *pdev)
mem = request_mem_region(res->start, res->end - res->start + 1,
pdev->name);
- if (mem == NULL)
- return -EBUSY;
+ if (mem == NULL) {
+ ret = -EBUSY;
+ goto err_region;
+ }
dev_set_drvdata(&pdev->dev, mem);
- rng_base = (u32 __force __iomem *)io_p2v(res->start);
+ rng_base = ioremap(res->start, res->end - res->start + 1);
+ if (!rng_base) {
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
ret = hwrng_register(&omap_rng_ops);
- if (ret) {
- release_resource(mem);
- rng_base = NULL;
- return ret;
- }
+ if (ret)
+ goto err_register;
dev_info(&pdev->dev, "OMAP Random Number Generator ver. %02x\n",
omap_rng_read_reg(RNG_REV_REG));
@@ -138,6 +141,18 @@ static int __init omap_rng_probe(struct platform_device *pdev)
rng_dev = pdev;
return 0;
+
+err_register:
+ iounmap(rng_base);
+ rng_base = NULL;
+err_ioremap:
+ release_resource(mem);
+err_region:
+ if (cpu_is_omap24xx()) {
+ clk_disable(rng_ick);
+ clk_put(rng_ick);
+ }
+ return ret;
}
static int __exit omap_rng_remove(struct platform_device *pdev)
@@ -148,6 +163,8 @@ static int __exit omap_rng_remove(struct platform_device *pdev)
omap_rng_write_reg(RNG_MASK_REG, 0x0);
+ iounmap(rng_base);
+
if (cpu_is_omap24xx()) {
clk_disable(rng_ick);
clk_put(rng_ick);