On Thu, Feb 22, 2024 at 05:45:01PM +0100, Herve Codina wrote:

On Thu, 22 Feb 2024 17:29:05 +0200
Andy Shevchenko [off-list ref] wrote:

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On Thu, Feb 22, 2024 at 03:22:14PM +0100, Herve Codina wrote:

...

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+	spin_lock_irqsave(&qmc_hdlc->tx_lock, flags);  

Why not using cleanup.h from day 1?

I don't know about cleanup.h.
Can you tell me more ?
How should I use it ?

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+end:  

This label, in particular, will not be needed with above in place.

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+	spin_unlock_irqrestore(&qmc_hdlc->tx_lock, flags);
+	return ret;
+}  

Here are the examples:
6191e49de389 ("pinctrl: baytrail: Simplify code with cleanup helpers")
1d1b4770d4b6 ("platform/x86/intel/vsec: Use cleanup.h")
e2eeddefb046 ("pstore: inode: Convert mutex usage to guard(mutex)")

Some advanced stuff:
ced085ef369a ("PCI: Introduce cleanup helpers for device reference counts and locks")

Hope this helps.

-- 
With Best Regards,
Andy Shevchenko