6.6-stable review patch. If anyone has any objections, please let me know.
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From: Hugo Villeneuve hvilleneuve@dimonoff.com
commit d5078509c8b06c5c472a60232815e41af81c6446 upstream.
Simplify and improve readability by replacing while(1) loop with do {} while, and by using the keep_polling variable as the exit condition, making it more explicit.
Fixes: 834449872105 ("sc16is7xx: Fix for multi-channel stall") Cc: stable@vger.kernel.org Suggested-by: Andy Shevchenko andy.shevchenko@gmail.com Signed-off-by: Hugo Villeneuve hvilleneuve@dimonoff.com Link: https://lore.kernel.org/r/20231221231823.2327894-6-hugo@hugovil.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/sc16is7xx.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -782,17 +782,18 @@ out_port_irq:
static irqreturn_t sc16is7xx_irq(int irq, void *dev_id) { + bool keep_polling; + struct sc16is7xx_port *s = (struct sc16is7xx_port *)dev_id;
- while (1) { - bool keep_polling = false; + do { int i;
+ keep_polling = false; + for (i = 0; i < s->devtype->nr_uart; ++i) keep_polling |= sc16is7xx_port_irq(s, i); - if (!keep_polling) - break; - } + } while (keep_polling);
return IRQ_HANDLED; }