From: Arnd Bergmann <arnd@kernel.org> To: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Michal Simek <michal.simek@xilinx.com>, Punit Agrawal <punit1.agrawal@toshiba.co.jp> Cc: Arnd Bergmann <arnd@arndb.de>, Rajan Vaja <rajan.vaja@xilinx.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jolly Shah <jolly.shah@xilinx.com>, Quanyang Wang <quanyang.wang@windriver.com>, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] clk: zynqmp: fix compile testing without ZYNQMP_FIRMWARE Date: Wed, 21 Apr 2021 15:48:36 +0200 [thread overview] Message-ID: <20210421134844.3297838-1-arnd@kernel.org> (raw) From: Arnd Bergmann <arnd@arndb.de> When the firmware code is disabled, the incomplete error handling in the clk driver causes compile-time warnings: drivers/clk/zynqmp/pll.c: In function 'zynqmp_pll_recalc_rate': drivers/clk/zynqmp/pll.c:147:29: error: 'fbdiv' is used uninitialized [-Werror=uninitialized] 147 | rate = parent_rate * fbdiv; | ~~~~~~~~~~~~^~~~~~~ In function 'zynqmp_pll_get_mode', inlined from 'zynqmp_pll_recalc_rate' at drivers/clk/zynqmp/pll.c:148:6: drivers/clk/zynqmp/pll.c:61:27: error: 'ret_payload' is used uninitialized [-Werror=uninitialized] 61 | return ret_payload[1]; | ~~~~~~~~~~~^~~ drivers/clk/zynqmp/pll.c: In function 'zynqmp_pll_recalc_rate': drivers/clk/zynqmp/pll.c:53:13: note: 'ret_payload' declared here 53 | u32 ret_payload[PAYLOAD_ARG_CNT]; | ^~~~~~~~~~~ drivers/clk/zynqmp/clk-mux-zynqmp.c: In function 'zynqmp_clk_mux_get_parent': drivers/clk/zynqmp/clk-mux-zynqmp.c:57:16: error: 'val' is used uninitialized [-Werror=uninitialized] 57 | return val; | ^~~ As it was apparently intentional to support this for compile testing purposes, change the code to have just enough error handling for the compiler to not notice the remaining bugs. Fixes: 21f237534661 ("clk: zynqmp: Drop dependency on ARCH_ZYNQMP") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/clk/zynqmp/clk-mux-zynqmp.c | 4 +++- drivers/clk/zynqmp/pll.c | 8 ++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/clk/zynqmp/clk-mux-zynqmp.c b/drivers/clk/zynqmp/clk-mux-zynqmp.c index 06194149be83..2afded3c7c11 100644 --- a/drivers/clk/zynqmp/clk-mux-zynqmp.c +++ b/drivers/clk/zynqmp/clk-mux-zynqmp.c @@ -50,9 +50,11 @@ static u8 zynqmp_clk_mux_get_parent(struct clk_hw *hw) ret = zynqmp_pm_clock_getparent(clk_id, &val); - if (ret) + if (ret) { pr_warn_once("%s() getparent failed for clock: %s, ret = %d\n", __func__, clk_name, ret); + return ret; + } return val; } diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c index abe6afbf3407..67d2a2d260c1 100644 --- a/drivers/clk/zynqmp/pll.c +++ b/drivers/clk/zynqmp/pll.c @@ -54,9 +54,11 @@ static inline enum pll_mode zynqmp_pll_get_mode(struct clk_hw *hw) int ret; ret = zynqmp_pm_get_pll_frac_mode(clk_id, ret_payload); - if (ret) + if (ret) { pr_warn_once("%s() PLL get frac mode failed for %s, ret = %d\n", __func__, clk_name, ret); + return ret; + } return ret_payload[1]; } @@ -140,9 +142,11 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw, int ret; ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv); - if (ret) + if (ret) { pr_warn_once("%s() get divider failed for %s, ret = %d\n", __func__, clk_name, ret); + return -1ul; + } rate = parent_rate * fbdiv; if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@kernel.org> To: Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Michal Simek <michal.simek@xilinx.com>, Punit Agrawal <punit1.agrawal@toshiba.co.jp> Cc: Arnd Bergmann <arnd@arndb.de>, Rajan Vaja <rajan.vaja@xilinx.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jolly Shah <jolly.shah@xilinx.com>, Quanyang Wang <quanyang.wang@windriver.com>, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] clk: zynqmp: fix compile testing without ZYNQMP_FIRMWARE Date: Wed, 21 Apr 2021 15:48:36 +0200 [thread overview] Message-ID: <20210421134844.3297838-1-arnd@kernel.org> (raw) From: Arnd Bergmann <arnd@arndb.de> When the firmware code is disabled, the incomplete error handling in the clk driver causes compile-time warnings: drivers/clk/zynqmp/pll.c: In function 'zynqmp_pll_recalc_rate': drivers/clk/zynqmp/pll.c:147:29: error: 'fbdiv' is used uninitialized [-Werror=uninitialized] 147 | rate = parent_rate * fbdiv; | ~~~~~~~~~~~~^~~~~~~ In function 'zynqmp_pll_get_mode', inlined from 'zynqmp_pll_recalc_rate' at drivers/clk/zynqmp/pll.c:148:6: drivers/clk/zynqmp/pll.c:61:27: error: 'ret_payload' is used uninitialized [-Werror=uninitialized] 61 | return ret_payload[1]; | ~~~~~~~~~~~^~~ drivers/clk/zynqmp/pll.c: In function 'zynqmp_pll_recalc_rate': drivers/clk/zynqmp/pll.c:53:13: note: 'ret_payload' declared here 53 | u32 ret_payload[PAYLOAD_ARG_CNT]; | ^~~~~~~~~~~ drivers/clk/zynqmp/clk-mux-zynqmp.c: In function 'zynqmp_clk_mux_get_parent': drivers/clk/zynqmp/clk-mux-zynqmp.c:57:16: error: 'val' is used uninitialized [-Werror=uninitialized] 57 | return val; | ^~~ As it was apparently intentional to support this for compile testing purposes, change the code to have just enough error handling for the compiler to not notice the remaining bugs. Fixes: 21f237534661 ("clk: zynqmp: Drop dependency on ARCH_ZYNQMP") Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/clk/zynqmp/clk-mux-zynqmp.c | 4 +++- drivers/clk/zynqmp/pll.c | 8 ++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/clk/zynqmp/clk-mux-zynqmp.c b/drivers/clk/zynqmp/clk-mux-zynqmp.c index 06194149be83..2afded3c7c11 100644 --- a/drivers/clk/zynqmp/clk-mux-zynqmp.c +++ b/drivers/clk/zynqmp/clk-mux-zynqmp.c @@ -50,9 +50,11 @@ static u8 zynqmp_clk_mux_get_parent(struct clk_hw *hw) ret = zynqmp_pm_clock_getparent(clk_id, &val); - if (ret) + if (ret) { pr_warn_once("%s() getparent failed for clock: %s, ret = %d\n", __func__, clk_name, ret); + return ret; + } return val; } diff --git a/drivers/clk/zynqmp/pll.c b/drivers/clk/zynqmp/pll.c index abe6afbf3407..67d2a2d260c1 100644 --- a/drivers/clk/zynqmp/pll.c +++ b/drivers/clk/zynqmp/pll.c @@ -54,9 +54,11 @@ static inline enum pll_mode zynqmp_pll_get_mode(struct clk_hw *hw) int ret; ret = zynqmp_pm_get_pll_frac_mode(clk_id, ret_payload); - if (ret) + if (ret) { pr_warn_once("%s() PLL get frac mode failed for %s, ret = %d\n", __func__, clk_name, ret); + return ret; + } return ret_payload[1]; } @@ -140,9 +142,11 @@ static unsigned long zynqmp_pll_recalc_rate(struct clk_hw *hw, int ret; ret = zynqmp_pm_clock_getdivider(clk_id, &fbdiv); - if (ret) + if (ret) { pr_warn_once("%s() get divider failed for %s, ret = %d\n", __func__, clk_name, ret); + return -1ul; + } rate = parent_rate * fbdiv; if (zynqmp_pll_get_mode(hw) == PLL_MODE_FRAC) { -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-04-21 13:48 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-21 13:48 Arnd Bergmann [this message] 2021-04-21 13:48 ` [PATCH] clk: zynqmp: fix compile testing without ZYNQMP_FIRMWARE Arnd Bergmann 2021-04-22 5:48 ` Punit Agrawal 2021-04-22 5:48 ` Punit Agrawal 2021-04-22 10:54 ` Michal Simek 2021-04-22 10:54 ` Michal Simek 2021-04-23 6:37 ` Punit Agrawal 2021-04-23 6:37 ` Punit Agrawal 2021-04-30 2:17 ` Stephen Boyd 2021-04-30 2:17 ` Stephen Boyd 2021-06-21 13:15 ` Michal Simek 2021-06-21 13:15 ` Michal Simek
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