clk: zynqmp: Fix invalid clock name queries

The clock driver makes EEMI call to get the name of invalid clk
when executing versal_get_clock_info() function. This results in
error messages.
Added check for validating clock before saving clock attribute and
calling zynqmp_pm_clock_get_name() in versal_get_clock_info() function.

Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Link: https://lkml.kernel.org/r/1583185843-20707-4-git-send-email-jolly.shah@xilinx.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/zynqmp/clkc.c b/drivers/clk/zynqmp/clkc.c
index 10e89f2..3e83c51 100644 (file)
--- a/drivers/clk/zynqmp/clkc.c
+++ b/drivers/clk/zynqmp/clkc.c
@@ -663,6 +663,11 @@ static void zynqmp_get_clock_info(void)
                        continue;
 
                clock[i].valid = FIELD_GET(CLK_ATTR_VALID, attr.attr[0]);
+               /* skip query for Invalid clock */
+               ret = zynqmp_is_valid_clock(i);
+               if (ret != CLK_ATTR_VALID)
+                       continue;
+
                clock[i].type = FIELD_GET(CLK_ATTR_TYPE, attr.attr[0]) ?
                        CLK_TYPE_EXTERNAL : CLK_TYPE_OUTPUT;