drm/drv: Convert wedged event string building to seq_buf

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event_string[] has a fixed size of WEDGE_STR_LEN (32) bytes.
The original scnprintf()-based loop required a manual pre-flight
bounds check.

Replace the manual bookkeeping with seq_buf, which tracks overflow
internally. seq_buf_printf() writes each "method," token into the
buffer.

On overflow, a warning is issued, len retains the position of the
last successful write, so the trailing comma is stripped cleanly
without including any partial method name in the uevent payload.

Assisted-by: Claude:claude-Sonnet-4.6
Signed-off-by: Mallesh Koujalagi <mallesh.koujalagi@intel.com>
Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://patch.msgid.link/20260823003349.587495-2-mallesh.koujalagi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Mallesh Koujalagi 2026-08-23 06:03:50 +05:30 • committed by Rodrigo Vivi

parent ec99b095ae

commit 8a04262e0a

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1 changed files with 17 additions and 12 deletions

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drivers/gpu/drm/drm_drv.c

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