[PATCH v4 3/3] pwm: th1520: remove impl Send/Sync for Th1520PwmDriverData

[Alice Ryhl <aliceryhl@google.com>]

Now that clk implements Send and Sync, we no longer need to manually
implement these traits for Th1520PwmDriverData. Thus remove the
implementations.

Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Alice Ryhl <aliceryhl@google.com>
---
Cc: linux-riscv@lists.infradead.org
---
 drivers/pwm/pwm_th1520.rs | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/drivers/pwm/pwm_th1520.rs b/drivers/pwm/pwm_th1520.rs
index e3b7e77356fc2492077c519073e861beb3e44df9..043dc4dbc6232020195c7b73fad302bbb69652df 100644
--- a/drivers/pwm/pwm_th1520.rs
+++ b/drivers/pwm/pwm_th1520.rs
@@ -97,21 +97,6 @@ struct Th1520PwmDriverData {
     clk: Clk,
 }
 
-// This `unsafe` implementation is a temporary necessity because the underlying `kernel::clk::Clk`
-// type does not yet expose `Send` and `Sync` implementations. This block should be removed
-// as soon as the clock abstraction provides these guarantees directly.
-// TODO: Remove those unsafe impl's when Clk will support them itself.
-
-// SAFETY: The `devres` framework requires the driver's private data to be `Send` and `Sync`.
-// We can guarantee this because the PWM core synchronizes all callbacks, preventing concurrent
-// access to the contained `iomem` and `clk` resources.
-unsafe impl Send for Th1520PwmDriverData {}
-
-// SAFETY: The same reasoning applies as for `Send`. The PWM core's synchronization
-// guarantees that it is safe for multiple threads to have shared access (`&self`)
-// to the driver data during callbacks.
-unsafe impl Sync for Th1520PwmDriverData {}
-
 impl pwm::PwmOps for Th1520PwmDriverData {
     type WfHw = Th1520WfHw;
 

-- 
2.52.0.457.g6b5491de43-goog