Merge tag 'qcom-drivers-fixes-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes

Qualcomm driver fixes for v6.17-rc1

The recently extended sanity checks for the Qualcomm firmware files
turned out to be too restrictive, preventing a variety of firmware
images from being loaded. Adjust the checks to allow section header
sizes of 0 when sections aren't used.

* tag 'qcom-drivers-fixes-for-6.17' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  soc: qcom: mdt_loader: Deal with zero e_shentsize

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

drivers/soc/qcom/mdt_loader.c

@@ -39,12 +39,14 @@ static bool mdt_header_valid(const struct firmware *fw)
 	if (phend > fw->size)
 		return false;
 
-	if (ehdr->e_shentsize != sizeof(struct elf32_shdr))
-		return false;
+	if (ehdr->e_shentsize || ehdr->e_shnum) {
+		if (ehdr->e_shentsize != sizeof(struct elf32_shdr))
+			return false;
 
-	shend = size_add(size_mul(sizeof(struct elf32_shdr), ehdr->e_shnum), ehdr->e_shoff);
-	if (shend > fw->size)
-		return false;
+		shend = size_add(size_mul(sizeof(struct elf32_shdr), ehdr->e_shnum), ehdr->e_shoff);
+		if (shend > fw->size)
+			return false;
+	}
 
 	return true;
 }