linux-kernel - [PATCH v1 3/5] misc: fastrpc: Fix initial memory allocation for Audio PD memory pool

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Message-Id: <20250513042825.2147985-4-ekansh.gupta@oss.qualcomm.com>
Date: Tue, 13 May 2025 09:58:23 +0530
From: Ekansh Gupta <ekansh.gupta@....qualcomm.com>
To: srinivas.kandagatla@....qualcomm.com, linux-arm-msm@...r.kernel.org
Cc: gregkh@...uxfoundation.org, quic_bkumar@...cinc.com,
        linux-kernel@...r.kernel.org, quic_chennak@...cinc.com,
        dri-devel@...ts.freedesktop.org, arnd@...db.de, stable@...nel.org
Subject: [PATCH v1 3/5] misc: fastrpc: Fix initial memory allocation for Audio PD memory pool

The initially allocated memory is not properly included in the pool,
leading to potential issues with memory management. Set the number
of pages to one to ensure that the initially allocated memory is
correctly added to the Audio PD memory pool.

Fixes: 0871561055e66 ("misc: fastrpc: Add support for audiopd")
Cc: stable@...nel.org
Signed-off-by: Ekansh Gupta <ekansh.gupta@....qualcomm.com>
---
 drivers/misc/fastrpc.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index d4e38b5e5e6c..b629e24f00bc 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1311,6 +1311,9 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
 		goto err;
 	}
 
+	inbuf.client_id = fl->client_id;
+	inbuf.namelen = init.namelen;
+	inbuf.pageslen = 0;
 	if (!fl->cctx->audio_init_mem) {
 		err = fastrpc_remote_heap_alloc(fl, fl->sctx->dev, init.memlen,
 						&buf);
@@ -1335,12 +1338,10 @@ static int fastrpc_init_create_static_process(struct fastrpc_user *fl,
 			list_add_tail(&buf->node, &fl->cctx->rhmaps);
 			spin_unlock_irqrestore(&fl->cctx->lock, flags);
 			fl->cctx->audio_init_mem = true;
+			inbuf.pageslen = 1;
 		}
 	}
 
-	inbuf.client_id = fl->client_id;
-	inbuf.namelen = init.namelen;
-	inbuf.pageslen = 0;
 	fl->pd = USER_PD;
 
 	args[0].ptr = (u64)(uintptr_t)&inbuf;
-- 
2.34.1