Re: [PATCH v2] remoteproc: remove rproc_elf32_sanity_check

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Hi Clement,

On 3/31/20 10:13 AM, Suman Anna wrote:
On 3/31/20 3:33 AM, Clement Leger wrote:
Since checks are present in the remoteproc elf loader before calling
da_to_va, loading a elf64 will work on 32bits flavors of kernel.
Indeed, if a segment size is larger than what size_t can hold, the
loader will return an error so the functionality is equivalent to
what exists today.

Signed-off-by: Clement Leger <cleger@xxxxxxxxx>

Acked-by: Suman Anna <s-anna@xxxxxx>

Can you repost this after rebasing on top of the rproc-next branch
which has the rproc_alloc refactoring changes pushed now?

regards
Suman


regards
Suman

---
Changes from v1 -> v2:
  - Remove possibity to override sanity_check operation

  drivers/remoteproc/remoteproc_core.c       |  3 +--
  drivers/remoteproc/remoteproc_elf_loader.c | 21 ---------------------
  drivers/remoteproc/remoteproc_internal.h   |  1 -
  drivers/remoteproc/st_remoteproc.c         |  2 +-
  drivers/remoteproc/st_slim_rproc.c         |  2 +-
  drivers/remoteproc/stm32_rproc.c           |  2 +-
  6 files changed, 4 insertions(+), 27 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index a9ac1d01e09b..191560048c1a 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -2068,8 +2068,7 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
  		rproc->ops->load = rproc_elf_load_segments;
  		rproc->ops->parse_fw = rproc_elf_load_rsc_table;
  		rproc->ops->find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table;
-		if (!rproc->ops->sanity_check)
-			rproc->ops->sanity_check = rproc_elf32_sanity_check;
+		rproc->ops->sanity_check = rproc_elf_sanity_check;
  		rproc->ops->get_boot_addr = rproc_elf_get_boot_addr;
  	}
diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c
index 16e2c496fd45..29034f99898d 100644
--- a/drivers/remoteproc/remoteproc_elf_loader.c
+++ b/drivers/remoteproc/remoteproc_elf_loader.c
@@ -112,27 +112,6 @@ int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw)
  }
  EXPORT_SYMBOL(rproc_elf_sanity_check);
-/**
- * rproc_elf_sanity_check() - Sanity Check ELF32 firmware image
- * @rproc: the remote processor handle
- * @fw: the ELF32 firmware image
- *
- * Make sure this fw image is sane.
- */
-int rproc_elf32_sanity_check(struct rproc *rproc, const struct firmware *fw)
-{
-	int ret = rproc_elf_sanity_check(rproc, fw);
-
-	if (ret)
-		return ret;
-
-	if (fw_elf_get_class(fw) == ELFCLASS32)
-		return 0;
-
-	return -EINVAL;
-}
-EXPORT_SYMBOL(rproc_elf32_sanity_check);
-
  /**
   * rproc_elf_get_boot_addr() - Get rproc's boot address.
   * @rproc: the remote processor handle
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h
index b389dc79da81..31994715fd43 100644
--- a/drivers/remoteproc/remoteproc_internal.h
+++ b/drivers/remoteproc/remoteproc_internal.h
@@ -54,7 +54,6 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len);
  phys_addr_t rproc_va_to_pa(void *cpu_addr);
  int rproc_trigger_recovery(struct rproc *rproc);
-int rproc_elf32_sanity_check(struct rproc *rproc, const struct firmware *fw);
  int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw);
  u64 rproc_elf_get_boot_addr(struct rproc *rproc, const struct firmware *fw);
  int rproc_elf_load_segments(struct rproc *rproc, const struct firmware *fw);
diff --git a/drivers/remoteproc/st_remoteproc.c b/drivers/remoteproc/st_remoteproc.c
index a6cbfa452764..a3268d95a50e 100644
--- a/drivers/remoteproc/st_remoteproc.c
+++ b/drivers/remoteproc/st_remoteproc.c
@@ -233,7 +233,7 @@ static const struct rproc_ops st_rproc_ops = {
  	.parse_fw		= st_rproc_parse_fw,
  	.load			= rproc_elf_load_segments,
  	.find_loaded_rsc_table	= rproc_elf_find_loaded_rsc_table,
-	.sanity_check		= rproc_elf32_sanity_check,
+	.sanity_check		= rproc_elf_sanity_check,
  	.get_boot_addr		= rproc_elf_get_boot_addr,
  };
diff --git a/drivers/remoteproc/st_slim_rproc.c b/drivers/remoteproc/st_slim_rproc.c
index 3cca8b65a8db..09bcb4d8b9e0 100644
--- a/drivers/remoteproc/st_slim_rproc.c
+++ b/drivers/remoteproc/st_slim_rproc.c
@@ -203,7 +203,7 @@ static const struct rproc_ops slim_rproc_ops = {
  	.da_to_va       = slim_rproc_da_to_va,
  	.get_boot_addr	= rproc_elf_get_boot_addr,
  	.load		= rproc_elf_load_segments,
-	.sanity_check	= rproc_elf32_sanity_check,
+	.sanity_check	= rproc_elf_sanity_check,
  };
/**
diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 6a66dbf2df40..2e07a95439c8 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -505,7 +505,7 @@ static struct rproc_ops st_rproc_ops = {
  	.load		= rproc_elf_load_segments,
  	.parse_fw	= stm32_rproc_parse_fw,
  	.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
-	.sanity_check	= rproc_elf32_sanity_check,
+	.sanity_check	= rproc_elf_sanity_check,
  	.get_boot_addr	= rproc_elf_get_boot_addr,
  };





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