The remove callback is only called after probe completed successfully. In this case platform_set_drvdata() was called with a non-NULL argument and so !sdev is never true. The motivation for this change is to get rid of non-zero return values for remove callbacks as their only effect is to trigger a runtime warning. See commit e5e1c2097881 ("driver core: platform: Emit a warning if a remove callback returned non-zero") for further details. Link: https://lore.kernel.org/linux-arm-kernel/20210721205450.2173923-1-u.kleine-koenig@pengutronix.de Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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