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Commit 48c8362a authored by Skylar Chang's avatar Skylar Chang
Browse files

msm: ipa: fix IPC low priority logging 



Allocate IPC low priority on first usage only.

Change-Id: Icea7f0fad9ed34c93641296f68736bbaf2e6eaa9
CRs-Fixed: 2016076
Acked-by: default avatarAdy Abraham <adya@qti,qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent a3298c3d

drivers/platform/msm/ipa/ipa_v3/ipa_debugfs.c

+8 −9
Original line number Diff line number Diff line
@@ -106,6 +106,7 @@ static char dbg_buff[IPA_MAX_MSG_LEN]; 
static char *active_clients_buf;



static s8 ep_reg_idx;

static void *ipa_ipc_low_buff;





static ssize_t ipa3_read_gen_reg(struct file *file, char __user *ubuf,
@@ -1758,22 +1759,20 @@ static ssize_t ipa3_enable_ipc_low(struct file *file, 
	if (kstrtos8(dbg_buff, 0, &option))

		return -EFAULT;



	mutex_lock(&ipa3_ctx->lock);

	if (option) {

		if (!ipa3_ctx->logbuf_low) {

			ipa3_ctx->logbuf_low =

		if (!ipa_ipc_low_buff) {

			ipa_ipc_low_buff =

				ipc_log_context_create(IPA_IPC_LOG_PAGES,

					"ipa_low", 0);

		}



		if (ipa3_ctx->logbuf_low == NULL) {

			if (ipa_ipc_low_buff == NULL)

				IPAERR("failed to get logbuf_low\n");

			return -EFAULT;

		}

		ipa3_ctx->logbuf_low = ipa_ipc_low_buff;

	} else {

		if (ipa3_ctx->logbuf_low)

			ipc_log_context_destroy(ipa3_ctx->logbuf_low);

		ipa3_ctx->logbuf_low = NULL;

	}

	mutex_unlock(&ipa3_ctx->lock);



	return count;

}