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authorAndre Werner <andre.werner@systec-electronic.com>2025-01-21 10:18:19 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-02-04 16:42:42 +0300
commite8ed246ded863eb862806c5591afdcf70012ab5e (patch)
treeb793c1decf711ee0e584184acde743c3fb9f98c0 /rust/helpers/helpers.c
parent2014c95afecee3e76ca4a56956a936e23283f05b (diff)
downloadlinux-e8ed246ded863eb862806c5591afdcf70012ab5e.tar.xz
serial: sc16is7xx: Fix IRQ number check behavior
The logical meaning of the previous version is wrong due to a typo. If the IRQ equals 0, no interrupt pin is available and polling mode shall be used. Additionally, this fix adds a check for IRQ < 0 to increase robustness, because documentation still says that negative IRQ values cannot be absolutely ruled-out. Fixes: 104c1b9dde9d ("serial: sc16is7xx: Add polling mode if no IRQ pin is available") Signed-off-by: Andre Werner <andre.werner@systec-electronic.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Maarten Brock <maarten.brock@sttls.nl> Reviewed-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Link: https://lore.kernel.org/r/20250121071819.1346672-1-andre.werner@systec-electronic.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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