linux-kernel - [PATCH v3 1/2] remoteproc: elf_loader: Update resource table name check

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Date:   Tue, 20 Dec 2022 13:31:08 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     <linux-remoteproc@...r.kernel.org>, <agross@...nel.org>,
        <andersson@...nel.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <srinivas.kandagatla@...aro.org>,
        <quic_rohkumar@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <swboyd@...omium.org>,
        <judyhsiao@...omium.org>, <devicetree@...r.kernel.org>,
        <krzysztof.kozlowski@...aro.org>, <mathieu.poirier@...aro.org>,
        <corbet@....net>
CC:     Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
Subject: [PATCH v3 1/2] remoteproc: elf_loader: Update resource table name check

Update the way of checking resource table name with prefix
substring search instead of complete string search.
In general Qualcomm DSP binary is prepared by combining different ELFs',
hence section header name (e.g. .resource_table), appended with ELF name
to differentiate with same section(e.g. resource_table.ac_bin_process) of
different ELFs'.
Example readelf output of DSP binary:
    [60] .start.ac_bin_process PROGBITS
    [61] .resource_table.ac_bin_process PROGBITS
    [62] .comment.ac_bin_process PROGBITS

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
---
 drivers/remoteproc/remoteproc_elf_loader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c
index 5a412d7..77330d6 100644
--- a/drivers/remoteproc/remoteproc_elf_loader.c
+++ b/drivers/remoteproc/remoteproc_elf_loader.c
@@ -272,7 +272,7 @@ find_table(struct device *dev, const struct firmware *fw)
 		u64 offset = elf_shdr_get_sh_offset(class, shdr);
 		u32 name = elf_shdr_get_sh_name(class, shdr);
 
-		if (strcmp(name_table + name, ".resource_table"))
+		if (!strstarts(name_table + name, ".resource_table"))
 			continue;
 
 		table = (struct resource_table *)(elf_data + offset);
-- 
2.7.4