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The tuning logic at tda8290 relies on agc_stat and adc_sat to be initialized. However, as warned by smatch: drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'agc_stat'. drivers/media/tuners/tda8290.c:261 tda8290_set_params() error: uninitialized symbol 'adc_sat'. drivers/media/tuners/tda8290.c:262 tda8290_set_params() error: uninitialized symbol 'adc_sat'. That could cause an erratic behavior if PLL is not locked, as the code will only work if !(pll_stat & 0x80) && (adc_sat < 20) So, initialize it to zero, in order to let the code below to be called, with should give more chances to adjust the tuner gain, in order to get a PLL lock. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.