platform/x86: ideapad-laptop: pass a correct pointer to the driver data

devm_platform_profile_register() expects a pointer to the private driver
data but instead an address of the pointer variable is passed due to a
typo. This leads to the crashes later:

BUG: unable to handle page fault for address: 00000000fe0d0044
PGD 0 P4D 0
Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 6 UID: 0 PID: 1284 Comm: tuned Tainted: G        W          6.13.0+ #7
Tainted: [W]=WARN
Hardware name: LENOVO 21D0/LNVNB161216, BIOS J6CN45WW 03/17/2023
RIP: 0010:__mutex_lock.constprop.0+0x6bf/0x7f0
Call Trace:
 <TASK>
 dytc_profile_set+0x4a/0x140 [ideapad_laptop]
 _store_and_notify+0x13/0x40 [platform_profile]
 class_for_each_device+0x145/0x180
 platform_profile_store+0xc0/0x130 [platform_profile]
 kernfs_fop_write_iter+0x13e/0x1f0
 vfs_write+0x290/0x450
 ksys_write+0x6c/0xe0
 do_syscall_64+0x82/0x160
 entry_SYSCALL_64_after_hwframe+0x76/0x7e

Found by Linux Verification Center (linuxtesting.org).

Fixes: 249c576f0f9d ("ACPI: platform_profile: Let drivers set drvdata to the class device")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250127210202.568691-1-pchelkin@ispras.ru
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index dfb5d4b8c0465c64e6873e8db94ae8a0ab963d3c..30bd366d7b58a717d249197ab625605f88cb21a0 100644 (file)
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1121,7 +1121,7 @@ static int ideapad_dytc_profile_init(struct ideapad_private *priv)
 
        /* Create platform_profile structure and register */
        priv->dytc->ppdev = devm_platform_profile_register(&priv->platform_device->dev,
-                                                          "ideapad-laptop", &priv->dytc,
+                                                          "ideapad-laptop", priv->dytc,
                                                           &dytc_profile_ops);
        if (IS_ERR(priv->dytc->ppdev)) {
                err = PTR_ERR(priv->dytc->ppdev);