fixed sparse warnings by adding a cast in assignment from
void [noderef] __user * to unsigned int __force *
and a reverse cast in argument from
unsigned int * to unsigned int __user * .
v1 -> v2:
- Add a reverse cast in argument
v2 -> v3:
- Change commit description as suggested by Ian Abott
v3 -> v4:
- Add versioning information in commit description
Signed-off-by: B K Karthik <[email protected]>
---
drivers/staging/comedi/comedi_fops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
index 3f70e5dfac39..9cdc1e8a022d 100644
--- a/drivers/staging/comedi/comedi_fops.c
+++ b/drivers/staging/comedi/comedi_fops.c
@@ -2956,7 +2956,7 @@ static int get_compat_cmd(struct comedi_cmd *cmd,
cmd->scan_end_arg = v32.scan_end_arg;
cmd->stop_src = v32.stop_src;
cmd->stop_arg = v32.stop_arg;
- cmd->chanlist = compat_ptr(v32.chanlist);
+ cmd->chanlist = (unsigned int __force *)compat_ptr(v32.chanlist);
cmd->chanlist_len = v32.chanlist_len;
cmd->data = compat_ptr(v32.data);
cmd->data_len = v32.data_len;
@@ -2983,7 +2983,7 @@ static int put_compat_cmd(struct comedi32_cmd_struct __user *cmd32,
v32.stop_src = cmd->stop_src;
v32.stop_arg = cmd->stop_arg;
/* Assume chanlist pointer is unchanged. */
- v32.chanlist = ptr_to_compat(cmd->chanlist);
+ v32.chanlist = ptr_to_compat((unsigned int __user *)cmd->chanlist);
v32.chanlist_len = cmd->chanlist_len;
v32.data = ptr_to_compat(cmd->data);
v32.data_len = cmd->data_len;
--
2.20.1
On 16/07/2020 16:25, B K Karthik wrote:
> fixed sparse warnings by adding a cast in assignment from
> void [noderef] __user * to unsigned int __force *
> and a reverse cast in argument from
> unsigned int * to unsigned int __user * .
>
> v1 -> v2:
> - Add a reverse cast in argument
> v2 -> v3:
> - Change commit description as suggested by Ian Abott
> v3 -> v4:
> - Add versioning information in commit description
For future reference, the patch change history should go below the "---"
divider line below where git will ignore it so that it does not appear
in the final commit description. Otherwise, the committer would need to
edit it out manually.
>
> Signed-off-by: B K Karthik <[email protected]>
> ---
> drivers/staging/comedi/comedi_fops.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c
> index 3f70e5dfac39..9cdc1e8a022d 100644
> --- a/drivers/staging/comedi/comedi_fops.c
> +++ b/drivers/staging/comedi/comedi_fops.c
> @@ -2956,7 +2956,7 @@ static int get_compat_cmd(struct comedi_cmd *cmd,
> cmd->scan_end_arg = v32.scan_end_arg;
> cmd->stop_src = v32.stop_src;
> cmd->stop_arg = v32.stop_arg;
> - cmd->chanlist = compat_ptr(v32.chanlist);
> + cmd->chanlist = (unsigned int __force *)compat_ptr(v32.chanlist);
> cmd->chanlist_len = v32.chanlist_len;
> cmd->data = compat_ptr(v32.data);
> cmd->data_len = v32.data_len;
> @@ -2983,7 +2983,7 @@ static int put_compat_cmd(struct comedi32_cmd_struct __user *cmd32,
> v32.stop_src = cmd->stop_src;
> v32.stop_arg = cmd->stop_arg;
> /* Assume chanlist pointer is unchanged. */
> - v32.chanlist = ptr_to_compat(cmd->chanlist);
> + v32.chanlist = ptr_to_compat((unsigned int __user *)cmd->chanlist);
> v32.chanlist_len = cmd->chanlist_len;
> v32.data = ptr_to_compat(cmd->data);
> v32.data_len = cmd->data_len;
>
Still looks good.
Reviewed-by: Ian Abbott <[email protected]>
--
-=( Ian Abbott <[email protected]> || Web: http://www.mev.co.uk )=-
-=( MEV Ltd. is a company registered in England & Wales. )=-
-=( Registered number: 02862268. Registered address: )=-
-=( 15 West Park Road, Bramhall, STOCKPORT, SK7 3JZ, UK. )=-
On Thu, Jul 16, 2020 at 11:25:48AM -0400, B K Karthik wrote:
> fixed sparse warnings by adding a cast in assignment from
> void [noderef] __user * to unsigned int __force *
> and a reverse cast in argument from
> unsigned int * to unsigned int __user * .
>
> v1 -> v2:
> - Add a reverse cast in argument
> v2 -> v3:
> - Change commit description as suggested by Ian Abott
> v3 -> v4:
> - Add versioning information in commit description
As Ian said, all of that goes below the --- line so it will not show up
in the changelog text.
As I don't want to hand-edit changelog text, as it does not scale, can
you please fix this up and resend as a v5?
thanks,
greg k-h