rtc: treewide: remove excess rtc_device validation

The patch "rtc: verify a critical argument to rtc_update_irq() before
using it" introduces validation for rtc_device in the RTC core, so there
are no need to check this argument for rtc_update_irq() from the
drivers.

This patch removes such check for the existing rtc_update_irq() users.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 5 insertions, 8 deletions

diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 4ff20f9dc212..b13d1399b81a 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -371,8 +371,7 @@ ds1511_interrupt(int irq, void *dev_id)
                         events |= RTC_UF;
                 else
                         events |= RTC_AF;
-                if (likely(pdata->rtc))
-                        rtc_update_irq(pdata->rtc, 1, events);
+                rtc_update_irq(pdata->rtc, 1, events);
         }
         spin_unlock(&pdata->lock);
         return events ? IRQ_HANDLED : IRQ_NONE;
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index 9ac2fa07dffa..ab56893aac73 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -206,8 +206,7 @@ static irqreturn_t ds1553_rtc_interrupt(int irq, void *dev_id)
                         events |= RTC_UF;
                 else
                         events |= RTC_AF;
-                if (likely(pdata->rtc))
-                        rtc_update_irq(pdata->rtc, 1, events);
+                rtc_update_irq(pdata->rtc, 1, events);
         }
         spin_unlock(&pdata->lock);
         return events ? IRQ_HANDLED : IRQ_NONE;
diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c
index a176ba614683..35ed49ea1f81 100644
--- a/drivers/rtc/rtc-stk17ta8.c
+++ b/drivers/rtc/rtc-stk17ta8.c
@@ -214,8 +214,7 @@ static irqreturn_t stk17ta8_rtc_interrupt(int irq, void *dev_id)
                         events |= RTC_UF;
                 else
                         events |= RTC_AF;
-                if (likely(pdata->rtc))
-                        rtc_update_irq(pdata->rtc, 1, events);
+                rtc_update_irq(pdata->rtc, 1, events);
         }
         spin_unlock(&pdata->lock);
         return events ? IRQ_HANDLED : IRQ_NONE;
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
index 4f87234e0dee..2e678c681b13 100644
--- a/drivers/rtc/rtc-tx4939.c
+++ b/drivers/rtc/rtc-tx4939.c
@@ -176,8 +176,8 @@ static irqreturn_t tx4939_rtc_interrupt(int irq, void *dev_id)
                 tx4939_rtc_cmd(rtcreg, TX4939_RTCCTL_COMMAND_NOP);
         }
         spin_unlock(&pdata->lock);
-        if (likely(pdata->rtc))
-                rtc_update_irq(pdata->rtc, 1, events);
+        rtc_update_irq(pdata->rtc, 1, events);
+
         return IRQ_HANDLED;
 }