kernel/scripts/coccinelle/misc/ptr_err_to_pe.cocci, branch linux-rolling-stableHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable2025-09-26T19:26:41Zscripts/coccinelle: Find PTR_ERR() to %pe candidates2025-09-26T19:26:41ZGal Pressmangal@nvidia.com2025-09-18T10:43:46Zurn:sha1:57c49d2355729c12475554b4c51dbf830b02d08d
Add a new Coccinelle script to identify places where PTR_ERR() is used
in print functions and suggest using the %pe format specifier instead.
For printing error pointers (i.e., a pointer for which IS_ERR() is true)
%pe will print a symbolic error name (e.g,. -EINVAL), opposed to the raw
errno (e.g,. -22) produced by PTR_ERR().
It also makes the code cleaner by saving a redundant call to PTR_ERR().
The script supports context, report, and org modes.
Example transformation:
printk("Error: %ld\n", PTR_ERR(ptr)); // Before
printk("Error: %pe\n", ptr); // After
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Alexei Lazar <alazar@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1758192227-701925-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>