diff options
author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-21 09:51:23 +0100 |
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committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-12-21 09:51:23 +0100 |
commit | dfa9d178cd28caf5d76bc4f37f4b3e7e8df8e697 (patch) | |
tree | d97ca7790d8a622cba9fdd19832decdb0aa6418a /drivers/firmware/iscsi_ibft.c | |
parent | 3f19f08a7ec74cfc50fbad3c5e615760afbd23a0 (diff) | |
parent | 7b4050381127ae11fcfc74a106d715a5fbbf888a (diff) |
Merge branch 'devfreq-for-next' of git://git.infradead.org/users/kmpark/linux-samsung into pm-devfreq
* 'devfreq-for-next' of git://git.infradead.org/users/kmpark/linux-samsung: (765 commits)
PM/Devfreq: Add Exynos4-bus device DVFS driver for Exynos4210/4212/4412.
pci: Fix hotplug of Express Module with pci bridges
i2c-eg20t: correct the driver init order of pch_i2c_probe()
I2C: OMAP: fix FIFO usage for OMAP4
i2c-s3c2410: Fix return code of s3c24xx_i2c_parse_dt_gpio
i2c: i2c-s3c2410: Add a cpu_relax() to busy wait for bus idle
Linux 3.2-rc6
Revert "drm/i915: fix infinite recursion on unbind due to ilk vt-d w/a"
btrfs: lower the dirty balance poll interval
drm/i915/dp: Dither down to 6bpc if it makes the mode fit
drm/i915: enable semaphores on per-device defaults
drm/i915: don't set unpin_work if vblank_get fails
drm/i915: By default, enable RC6 on IVB and SNB when reasonable
iommu: Export intel_iommu_enabled to signal when iommu is in use
drm/i915/sdvo: Include LVDS panels for the IS_DIGITAL check
drm/i915: prevent division by zero when asking for chipset power
drm/i915: add PCH info to i915_capabilities
drm/i915: set the right SDVO transcoder for CPT
drm/i915: no-lvds quirk for ASUS AT5NM10T-I
sched: Fix select_idle_sibling() regression in selecting an idle SMT sibling
...
Diffstat (limited to 'drivers/firmware/iscsi_ibft.c')
-rw-r--r-- | drivers/firmware/iscsi_ibft.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c index c811cb107904..2cce44a1d7d0 100644 --- a/drivers/firmware/iscsi_ibft.c +++ b/drivers/firmware/iscsi_ibft.c @@ -746,6 +746,37 @@ static void __exit ibft_exit(void) ibft_cleanup(); } +#ifdef CONFIG_ACPI +static const struct { + char *sign; +} ibft_signs[] = { + /* + * One spec says "IBFT", the other says "iBFT". We have to check + * for both. + */ + { ACPI_SIG_IBFT }, + { "iBFT" }, +}; + +static void __init acpi_find_ibft_region(void) +{ + int i; + struct acpi_table_header *table = NULL; + + if (acpi_disabled) + return; + + for (i = 0; i < ARRAY_SIZE(ibft_signs) && !ibft_addr; i++) { + acpi_get_table(ibft_signs[i].sign, 0, &table); + ibft_addr = (struct acpi_table_ibft *)table; + } +} +#else +static void __init acpi_find_ibft_region(void) +{ +} +#endif + /* * ibft_init() - creates sysfs tree entries for the iBFT data. */ @@ -753,9 +784,16 @@ static int __init ibft_init(void) { int rc = 0; + /* + As on UEFI systems the setup_arch()/find_ibft_region() + is called before ACPI tables are parsed and it only does + legacy finding. + */ + if (!ibft_addr) + acpi_find_ibft_region(); + if (ibft_addr) { - printk(KERN_INFO "iBFT detected at 0x%llx.\n", - (u64)isa_virt_to_bus(ibft_addr)); + pr_info("iBFT detected.\n"); rc = ibft_check_device(); if (rc) |