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2020-02-03clk: ls1028a: fix a dereference of pointer 'parent' before a null checkColin Ian King1-1/+3
Currently the pointer 'parent' is being dereferenced before it is being null checked. Fix this by performing the null check before it is dereferenced. Addresses-Coverity: ("Dereference before null check") Fixes: d37010a3c162 ("clk: ls1028a: Add clock driver for Display output interface") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lkml.kernel.org/r/20200203223736.99645-1-colin.king@canonical.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-02-03clk: ls1028a: Fix warning on clamp() usageStephen Boyd1-2/+2
These constants are used in clamp() with the value being clamped an unsigned long. Make them unsigned long defines so that clamp() doesn't complain about comparing different types. In file included from include/linux/list.h:9, from include/linux/kobject.h:19, from include/linux/of.h:17, from include/linux/clk-provider.h:9, from drivers/clk/clk-plldig.c:8: drivers/clk/clk-plldig.c: In function 'plldig_determine_rate': include/linux/kernel.h:835:29: warning: comparison of distinct pointer types lacks a cast 835 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) | Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Wen He <wen.he_1@nxp.com> Fixes: d37010a3c162 ("clk: ls1028a: Add clock driver for Display output interface") Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lkml.kernel.org/r/20200203052507.93215-1-sboyd@kernel.org
2020-01-30clk: ls1028a: Add clock driver for Display output interfaceWen He1-0/+286
Add clock driver for QorIQ LS1028A Display output interfaces(LCD, DPHY), as implemented in TSMC CLN28HPM PLL, this PLL supports the programmable integer division and range of the display output pixel clock's 27-594MHz. Signed-off-by: Wen He <wen.he_1@nxp.com> Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lkml.kernel.org/r/20191213083402.35678-2-wen.he_1@nxp.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>