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authorFlorian Fainelli <f.fainelli@gmail.com>2023-03-23 15:52:45 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-05-11 23:03:28 +0900
commitce813763646407b1e6ca80a3b79b2d7675e94c3d (patch)
tree99e5a6c21b78636497af725dbd7fc6edcd9b2b84 /scripts
parent15b29ac9b8d5ec51b93148eefcd799771d8f724c (diff)
downloadlinux-ce813763646407b1e6ca80a3b79b2d7675e94c3d.tar.gz
scripts/gdb: bail early if there are no clocks
[ Upstream commit 1d7adbc74c009057ed9dc3112f388e91a9c79acc ]

Avoid generating an exception if there are no clocks registered:

(gdb) lx-clk-summary
                                 enable  prepare  protect
   clock                          count    count    count        rate
------------------------------------------------------------------------
Python Exception <class 'gdb.error'>: No symbol "clk_root_list" in
current context.
Error occurred in Python: No symbol "clk_root_list" in current context.

Link: https://lkml.kernel.org/r/20230323225246.3302977-1-f.fainelli@gmail.com
Fixes: d1e9710b63d8 ("scripts/gdb: initial clk support: lx-clk-summary")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Leonard Crestez <leonard.crestez@nxp.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/gdb/linux/clk.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/gdb/linux/clk.py b/scripts/gdb/linux/clk.py
index 061aecfa294e..7a01fdc3e844 100644
--- a/scripts/gdb/linux/clk.py
+++ b/scripts/gdb/linux/clk.py
@@ -41,6 +41,8 @@ are cached and potentially out of date"""
             self.show_subtree(child, level + 1)
 
     def invoke(self, arg, from_tty):
+        if utils.gdb_eval_or_none("clk_root_list") is None:
+            raise gdb.GdbError("No clocks registered")
         gdb.write("                                 enable  prepare  protect               \n")
         gdb.write("   clock                          count    count    count        rate   \n")
         gdb.write("------------------------------------------------------------------------\n")