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![]() We do not care about the return value of that read between the scratch register write and read, we really just want to make sure that the pattern in the bus get changed to make sure we are testing correctly the scratch pattern. Clang-analyzer complains about the never read scratch variable: >> drivers/usb/isp1760/isp1760-hcd.c:735:2: warning: Value stored to 'scratch' is never read [clang-analyzer-deadcode.DeadStores] scratch = isp1760_hcd_read(hcd, HC_CHIP_ID_HIGH); Just ignore the return value of that CHIP_ID_HIGH read, add more information to the comment above why we are doing this. And as at it, just do a small format change in the error message bellow. Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org> Link: https://lore.kernel.org/r/20210819180929.1327349-2-rui.silva@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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README |
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.