Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxx> writes:
> rtas_generic_errno() function will convert the generic rtas return codes
> into errno.
I don't see the point of renaming it, it just creates unnecessary churn.
The existing name seems OK to me.
...
> diff --git a/arch/powerpc/include/asm/rtas.h b/arch/powerpc/include/asm/rtas.h
> index 3abe15ac79db1..5572a0a2f6e18 100644
> --- a/arch/powerpc/include/asm/rtas.h
> +++ b/arch/powerpc/include/asm/rtas.h
> @@ -202,7 +202,9 @@ typedef struct {
> #define RTAS_USER_REGION_SIZE (64 * 1024)
>
> /* RTAS return status codes */
> -#define RTAS_BUSY -2 /* RTAS Busy */
> +#define RTAS_HARDWARE_ERROR (-1) /* Hardware Error */
> +#define RTAS_BUSY (-2) /* RTAS Busy */
Are the brackets necessary?
> +#define RTAS_INVALID_PARAMETER (-3) /* Invalid indicator/domain/sensor etc. */
> #define RTAS_EXTENDED_DELAY_MIN 9900
> #define RTAS_EXTENDED_DELAY_MAX 9905
>
> @@ -212,6 +214,11 @@ typedef struct {
> #define RTAS_THREADS_ACTIVE -9005 /* Multiple processor threads active */
> #define RTAS_OUTSTANDING_COPROC -9006 /* Outstanding coprocessor operations */
>
> +/* statuses specific to get-sensor-state */
> +#define RTAS_SLOT_UNISOLATED (-9000)
> +#define RTAS_SLOT_NOT_UNISOLATED (-9001)
> +#define RTAS_SLOT_NOT_USABLE (-9002)
These aren't specific to get-sensor-state.
They're used by at least: ibm,manage-flash-image, ibm,activate-firmware,
ibm,configure-connector, set-indicator etc.
They have different meanings for those calls. I think you're best to
just leave the constant values in rtas_error_rc().
> /* RTAS event classes */
> #define RTAS_INTERNAL_ERROR 0x80000000 /* set bit 0 */
> #define RTAS_EPOW_WARNING 0x40000000 /* set bit 1 */
> @@ -425,6 +432,7 @@ extern int rtas_set_indicator(int indicator, int index, int new_value);
> extern int rtas_set_indicator_fast(int indicator, int index, int new_value);
> extern void rtas_progress(char *s, unsigned short hex);
> int rtas_ibm_suspend_me(int *fw_status);
> +int rtas_generic_errno(int rtas_rc);
>
> struct rtc_time;
> extern time64_t rtas_get_boot_time(void);
> diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
> index c087eeee320ff..80b6099e8ce20 100644
> --- a/arch/powerpc/kernel/rtas.c
> +++ b/arch/powerpc/kernel/rtas.c
> @@ -1330,33 +1330,34 @@ bool __ref rtas_busy_delay(int status)
> }
> EXPORT_SYMBOL_GPL(rtas_busy_delay);
>
> -static int rtas_error_rc(int rtas_rc)
> +int rtas_generic_errno(int rtas_rc)
> {
> int rc;
>
> switch (rtas_rc) {
> - case -1: /* Hardware Error */
> - rc = -EIO;
> - break;
> - case -3: /* Bad indicator/domain/etc */
> - rc = -EINVAL;
> - break;
> - case -9000: /* Isolation error */
> - rc = -EFAULT;
> - break;
> - case -9001: /* Outstanding TCE/PTE */
> - rc = -EEXIST;
> - break;
> - case -9002: /* No usable slot */
> - rc = -ENODEV;
> - break;
> - default:
> - pr_err("%s: unexpected error %d\n", __func__, rtas_rc);
> - rc = -ERANGE;
> - break;
> + case RTAS_HARDWARE_ERROR: /* Hardware Error */
> + rc = -EIO;
> + break;
> + case RTAS_INVALID_PARAMETER: /* Bad indicator/domain/etc */
> + rc = -EINVAL;
> + break;
> + case RTAS_SLOT_UNISOLATED: /* Isolation error */
> + rc = -EFAULT;
> + break;
> + case RTAS_SLOT_NOT_UNISOLATED: /* Outstanding TCE/PTE */
> + rc = -EEXIST;
> + break;
> + case RTAS_SLOT_NOT_USABLE: /* No usable slot */
> + rc = -ENODEV;
> + break;
> + default:
> + pr_err("%s: unexpected error %d\n", __func__, rtas_rc);
> + rc = -ERANGE;
> + break;
> }
> return rc;
> }
> +EXPORT_SYMBOL(rtas_generic_errno);
Should be GPL.
cheers
