linux-kernel - [PATCH v2 5/8] remoteproc: Don't handle empty resource table

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Date:   Fri,  5 Jan 2018 15:58:02 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Loic Pallardy <loic.pallardy@...com>
Subject: [PATCH v2 5/8] remoteproc: Don't handle empty resource table

Allow a NULL table_ptr to have the same meaning as a table with 0
entries, allowing a subsequent patch to skip the assignment step.

A few other places in the implementation does dereference table_ptr, but
they are currently all coming from rproc_handle_resources().

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---

Changes since v1:
- None

 drivers/remoteproc/remoteproc_core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 2c669a73e77d..3160cfe897da 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -739,6 +739,9 @@ static int rproc_handle_resources(struct rproc *rproc,
 	rproc_handle_resource_t handler;
 	int ret = 0, i;
 
+	if (!rproc->table_ptr)
+		return 0;
+
 	for (i = 0; i < rproc->table_ptr->num; i++) {
 		int offset = rproc->table_ptr->offset[i];
 		struct fw_rsc_hdr *hdr = (void *)rproc->table_ptr + offset;
-- 
2.15.0