From 95c4cd1d19e3e1d4894457a6f015e3a045bc9b06 Mon Sep 17 00:00:00 2001 From: Robert Schlabbach Date: Thu, 6 Jan 2022 23:49:47 +0100 Subject: [PATCH] media: si2157: fix 6MHz & 6.1MHz bandwidth setting Commit 98c65a3dac95 ("media: si2157: add support for 1.7MHz and 6.1 MHz") introduced two bugs: The 6.1MHz setting was always used for any bandwidth less than 7MHz due to missing "else" keywords, and then the setting was not specified as decimal 10, but as hexadecimal 0x10, which makes the tuner refuse the tune command. In sum, it is not possible to tune to any channels of less than 7MHz bandwidth anymore. Add the missing "else" keywords and convert all bandwidth settings to decimal to avoid any future decimal vs. hexadecimal confusion. Remove the use of the undefined bandwidth setting 0x0f for bandwidths greater than 8MHz, which is also refused by the tune command, in favour of using the default bandwidth setting 8 for any bandwidths greater than 7MHz. Link: https://lore.kernel.org/linux-media/trinity-d0015ea1-1da5-4c7d-a75b-781fb26dc339-1641509387112@3c-app-gmx-bap68 Fixes: 98c65a3dac95 ("media: si2157: add support for 1.7MHz and 6.1 MHz") Reported-by: Robert Schlabbach Signed-off-by: Robert Schlabbach Signed-off-by: Mauro Carvalho Chehab --- drivers/media/tuners/si2157.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index 481c5c3..76dc10d 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -459,17 +459,15 @@ static int si2157_set_params(struct dvb_frontend *fe) } if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000) - bandwidth = 0x09; - if (c->bandwidth_hz <= 6000000) - bandwidth = 0x06; - if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) - bandwidth = 0x10; + bandwidth = 9; + else if (c->bandwidth_hz <= 6000000) + bandwidth = 6; + else if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) + bandwidth = 10; else if (c->bandwidth_hz <= 7000000) - bandwidth = 0x07; - else if (c->bandwidth_hz <= 8000000) - bandwidth = 0x08; + bandwidth = 7; else - bandwidth = 0x0f; + bandwidth = 8; switch (c->delivery_system) { case SYS_ATSC: -- 2.7.4