Re: [PATCH v2 1/2] remoteproc: elf_loader: Update resource table name check

From: Philippe Mathieu-Daudé
Date: Thu Dec 15 2022 - 02:11:17 EST


On 13/12/22 10:48, Srinivasa Rao Mandadapu wrote:
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,

Maybe 'ELFs'? (twice).

hence section header name (e.g. .resource_table), appended with elf name
to differentiate with same section of different elfs.

Please include here the section info parsed by readelf as an example,
as suggested by Stephen in your v1:
https://lore.kernel.org/linux-remoteproc/CAE-0n52cNite8-4HDoQcsZ+UvZFkJU8c5oUjxPB5ag5WP6E9=g@xxxxxxxxxxxxxx/

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@xxxxxxxxxxx>
---
Changes since v1:
-- Update the commit message.
-- Use strstarts instead of strstr.

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);