diff options
| author | Jon Medhurst <tixy@linaro.org> | 2012-07-25 15:01:40 +0100 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2013-04-29 09:43:11 +0100 |
| commit | 0cb6b75d8bd32750432a9c2ac544321b3fa2d894 (patch) | |
| tree | a845f2aa861d34e0ea35c8ba02f7ad0c7dcaa2e7 /drivers/misc | |
| parent | 7fb3e6503a5a7f79c703db69d928d502ce28bd5b (diff) | |
drivers: arm-spc: Add function for testing if SPC driver is loaded
To enable drivers which use SPC functions to safely exist in kernels
which are run on hardware without SPC hardware, they need a method of
detecting its presence. The new function vexpress_spc_check_loaded()
provides this.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/vexpress/arm-spc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/misc/vexpress/arm-spc.c b/drivers/misc/vexpress/arm-spc.c index 23cee9df576e..6453d5b0ac51 100644 --- a/drivers/misc/vexpress/arm-spc.c +++ b/drivers/misc/vexpress/arm-spc.c @@ -281,6 +281,13 @@ int vexpress_spc_wfi_cpustat(int cluster) } EXPORT_SYMBOL_GPL(vexpress_spc_wfi_cpustat); +static bool vexpress_spc_loaded; + +bool vexpress_spc_check_loaded(void) +{ + return vexpress_spc_loaded; +} +EXPORT_SYMBOL_GPL(vexpress_spc_check_loaded); static int __devinit vexpress_spc_driver_probe(struct platform_device *pdev) { @@ -317,6 +324,7 @@ static int __devinit vexpress_spc_driver_probe(struct platform_device *pdev) platform_set_drvdata(pdev, info); pr_info("vexpress_spc loaded at %p\n", info->baseaddr); + vexpress_spc_loaded = true; return ret; ioremap_err: |