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SubjectRe: [PATCH v2 2/2] hwrng: msm: Add PRNG support for MSM SoC's
Hi Stephen,

Thanks for the review.

On 10/11/2013 11:37 PM, Stephen Boyd wrote:
> On 10/11, Stanimir Varbanov wrote:
>> This adds a driver for hardware random number generator present
>> on Qualcomm MSM SoC's.
>>
>> Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
>> ---
>
> Just nitpicks.
>
>> diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
>> index 0aa9d91daef5..d902330cef43 100644
>> --- a/drivers/char/hw_random/Kconfig
>> +++ b/drivers/char/hw_random/Kconfig
>> @@ -314,3 +314,15 @@ config HW_RANDOM_TPM
>> module will be called tpm-rng.
>>
>> If unsure, say Y.
>> +
>> +config HW_RANDOM_MSM
>> + tristate "Qualcomm MSM Random Number Generator support"
>> + depends on HW_RANDOM && ARCH_MSM && HAVE_CLK
>
> It should be fine to drop HAVE_CLK here because ARCH_MSM always
> selects COMMON_CLK which indirectly selects HAVE_CLK.

It is leftover, I'll remove HAVE_CLK dependency.

>
>> + ---help---
>> + This driver provides kernel-side support for the Random Number
>> + Generator hardware found on Qualcomm MSM SoCs.
>> +
>> + To compile this driver as a module, choose M here. the
>> + module will be called msm-rng.
>> +
>> + If unsure, say Y.
>> diff --git a/drivers/char/hw_random/msm-rng.c b/drivers/char/hw_random/msm-rng.c
>> new file mode 100644
>> index 000000000000..e219e94d02c1
>> --- /dev/null
>> +++ b/drivers/char/hw_random/msm-rng.c
>> @@ -0,0 +1,195 @@
>> +#include <linux/clk.h>
>> +#include <linux/hw_random.h>
>> +#include <linux/io.h>
>> +#include <linux/module.h>
>> +#include <linux/of.h>
>> +#include <linux/platform_device.h>
>
> +#include <linux/err.h> for -ENOMEM usage.

OK

>
>> +
>> +/* Device specific register offsets */
>> +#define PRNG_DATA_OUT 0x0000
>> +#define PRNG_STATUS 0x0004
>> +#define PRNG_LFSR_CFG 0x0100
>> +#define PRNG_CONFIG 0x0104
>> +
> [snip]
>> +
>> +MODULE_AUTHOR("The Linux Foundation");
>> +MODULE_DESCRIPTION("Qualcomm MSM random number generator driver");
>> +MODULE_LICENSE("GPL v2");
>
> MODULE_ALIAS perhaps?

OK, I will add it.

regards,
Stan



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