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rpmsg: fix published buffer length in rpmsg_recv_done

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After processing an incoming message, always publish the real size
of its containing buffer when putting it back on the available rx ring.

Using any different value might erroneously limit the remote processor
(leading it to think the buffer is smaller than it really is).

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Grosen <mgrosen@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Cc: Fernando Guzman Lugo <fernando.lugo@ti.com>
Cc: Rob Clark <rob@ti.com>
Cc: Ludovic BARRE <ludovic.barre@stericsson.com>
Cc: Loic PALLARDY <loic.pallardy@stericsson.com>
Cc: Omar Ramirez Luna <omar.luna@linaro.org>
This commit is contained in:
Ohad Ben-Cohen 2012-02-28 16:11:28 +02:00
parent 9648224e56
commit f1d9e9c767
1 changed files with 2 additions and 1 deletions
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3
drivers/rpmsg/virtio_rpmsg_bus.c
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@ -798,7 +798,8 @@ static void rpmsg_recv_done(struct virtqueue *rvq)
else
dev_warn(dev, "msg received with no recepient\n");
sg_init_one(&sg, msg, sizeof(*msg) + len);
/* publish the real size of the buffer */
sg_init_one(&sg, msg, RPMSG_BUF_SIZE);
/* add the buffer back to the remote processor's virtqueue */
err = virtqueue_add_buf(vrp->rvq, &sg, 0, 1, msg, GFP_KERNEL);