Commit 4dbb9e23 authored by Stephan Gerhold's avatar Stephan Gerhold Committed by Bjorn Andersson
Browse files

soc: qcom: smem: Add qcom_smem_is_available() 



Avoid having to look up a dummy item from SMEM to detect if it is
already available or if we need to defer probing.

Reviewed-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: default avatarStephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20230531-rpm-rproc-v3-7-a07dcdefd918@gerhold.net


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 9a2c674e

drivers/soc/qcom/smem.c

+11 −0
Original line number Diff line number Diff line
@@ -359,6 +359,17 @@ static struct qcom_smem *__smem; 
/* Timeout (ms) for the trylock of remote spinlocks */

#define HWSPINLOCK_TIMEOUT	1000



/**

 * qcom_smem_is_available() - Check if SMEM is available

 *

 * Return: true if SMEM is available, false otherwise.

 */

bool qcom_smem_is_available(void)

{

	return !!__smem;

}

EXPORT_SYMBOL(qcom_smem_is_available);



static int qcom_smem_alloc_private(struct qcom_smem *smem,

				   struct smem_partition *part,

				   unsigned item,

include/linux/soc/qcom/smem.h

+1 −0
Original line number Diff line number Diff line
@@ -4,6 +4,7 @@ 


#define QCOM_SMEM_HOST_ANY -1



bool qcom_smem_is_available(void);

int qcom_smem_alloc(unsigned host, unsigned item, size_t size);

void *qcom_smem_get(unsigned host, unsigned item, size_t *size);