From: Tony Lindgren <tony@atomide.com> To: linux-omap@vger.kernel.org Cc: Dave Gerlach <d-gerlach@ti.com>, Faiz Abbas <faiz_abbas@ti.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Keerthy <j-keerthy@ti.com>, Nishanth Menon <nm@ti.com>, Peter Ujfalusi <peter.ujfalusi@ti.com>, Roger Quadros <rogerq@ti.com>, Suman Anna <s-anna@ti.com>, Tero Kristo <t-kristo@ti.com>, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH 01/14] bus: ti-sysc: Fix sysc_unprepare() when no clocks have been allocated Date: Mon, 25 Mar 2019 14:58:36 -0700 [thread overview] Message-ID: <20190325215849.13182-2-tony@atomide.com> (raw) In-Reply-To: <20190325215849.13182-1-tony@atomide.com> If we return early before ddata->clocks have been allocated we will get a NULL pointer dereference in sysc_unprepare(). Let's fix this by returning early when no clocks are allocated. Fixes: 0eecc636e5a2 ("bus: ti-sysc: Add minimal TI sysc interconnect target driver") Signed-off-by: Tony Lindgren <tony@atomide.com> --- drivers/bus/ti-sysc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -1331,6 +1331,9 @@ static void sysc_unprepare(struct sysc *ddata) { int i; + if (!ddata->clocks) + return; + for (i = 0; i < SYSC_MAX_CLOCKS; i++) { if (!IS_ERR_OR_NULL(ddata->clocks[i])) clk_unprepare(ddata->clocks[i]); -- 2.21.0
WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com> To: linux-omap@vger.kernel.org Cc: Nishanth Menon <nm@ti.com>, Tero Kristo <t-kristo@ti.com>, Dave Gerlach <d-gerlach@ti.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org, Peter Ujfalusi <peter.ujfalusi@ti.com>, Faiz Abbas <faiz_abbas@ti.com>, Keerthy <j-keerthy@ti.com>, linux-arm-kernel@lists.infradead.org, Roger Quadros <rogerq@ti.com> Subject: [PATCH 01/14] bus: ti-sysc: Fix sysc_unprepare() when no clocks have been allocated Date: Mon, 25 Mar 2019 14:58:36 -0700 [thread overview] Message-ID: <20190325215849.13182-2-tony@atomide.com> (raw) In-Reply-To: <20190325215849.13182-1-tony@atomide.com> If we return early before ddata->clocks have been allocated we will get a NULL pointer dereference in sysc_unprepare(). Let's fix this by returning early when no clocks are allocated. Fixes: 0eecc636e5a2 ("bus: ti-sysc: Add minimal TI sysc interconnect target driver") Signed-off-by: Tony Lindgren <tony@atomide.com> --- drivers/bus/ti-sysc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c --- a/drivers/bus/ti-sysc.c +++ b/drivers/bus/ti-sysc.c @@ -1331,6 +1331,9 @@ static void sysc_unprepare(struct sysc *ddata) { int i; + if (!ddata->clocks) + return; + for (i = 0; i < SYSC_MAX_CLOCKS; i++) { if (!IS_ERR_OR_NULL(ddata->clocks[i])) clk_unprepare(ddata->clocks[i]); -- 2.21.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-25 21:59 UTC|newest] Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-25 21:58 [PATCH 00/14] ti-sysc changes to probe devices with dts data only Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren [this message] 2019-03-25 21:58 ` [PATCH 01/14] bus: ti-sysc: Fix sysc_unprepare() when no clocks have been allocated Tony Lindgren 2019-03-25 21:58 ` [PATCH 02/14] bus: ti-sysc: Handle missed no-idle property in addition to no-idle-on-init Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-31 6:41 ` Rob Herring 2019-03-31 6:41 ` Rob Herring 2019-03-31 6:41 ` Rob Herring 2019-03-25 21:58 ` [PATCH 03/14] bus: ti-sysc: Make functions static Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 04/14] bus: ti-sysc: Move legacy platform data idling into separate functions Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 05/14] bus: ti-sysc: Add separate functions for handling clocks Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-04-03 18:00 ` Tony Lindgren 2019-04-03 18:00 ` Tony Lindgren 2019-04-03 18:00 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 06/14] bus: ti-sysc: Enable all clocks directly during init to read revision Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 07/14] bus: ti-sysc: Allocate mdata as needed and do platform data based init later Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 08/14] bus: ti-sysc: Manage clocks for the interconnect target module in all cases Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 09/14] bus: ti-sysc: Move rstctrl reset to happen later Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-26 23:13 ` Tony Lindgren 2019-03-26 23:13 ` Tony Lindgren 2019-03-26 23:13 ` Tony Lindgren 2019-03-26 23:22 ` Suman Anna 2019-03-26 23:22 ` Suman Anna 2019-03-26 23:22 ` Suman Anna 2019-03-26 23:40 ` Tony Lindgren 2019-03-26 23:40 ` Tony Lindgren 2019-03-27 16:27 ` Suman Anna 2019-03-27 16:27 ` Suman Anna 2019-03-27 16:27 ` Suman Anna 2019-03-27 18:37 ` Tony Lindgren 2019-03-27 18:37 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 10/14] bus: ti-sysc: Add support for early quirks based on register address Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 11/14] bus: ti-sysc: Add quirk handling for external optional functional clock Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-04-08 16:51 ` Tony Lindgren 2019-04-08 16:51 ` Tony Lindgren 2019-04-08 16:51 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 12/14] bus: ti-sysc: Pass clockactivity quirk to platform functions Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 13/14] bus: ti-sysc: Handle swsup idle mode quirks Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren 2019-03-25 21:58 ` [PATCH 14/14] bus: ti-sysc: Detect DMIC for debugging Tony Lindgren 2019-03-25 21:58 ` Tony Lindgren
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