diff --git a/drivers/net/rtl8139d/src/device.rs b/drivers/net/rtl8139d/src/device.rs
index d742813296..7e19e7b651 100644
--- a/drivers/net/rtl8139d/src/device.rs
+++ b/drivers/net/rtl8139d/src/device.rs
@@ -138,6 +138,11 @@ impl NetworkAdapter for Rtl8139 {
 
     fn read_packet(&mut self, buf: &mut [u8]) -> Result<Option<usize>> {
         if !self.regs.cr.readf(CR_BUFE) {
+            // Acquire fence pairs the device's write of rxsts / size /
+            // data with our subsequent reads on weakly-ordered
+            // architectures.
+            core::sync::atomic::fence(core::sync::atomic::Ordering::Acquire);
+
             let rxsts = (self.rx(0) as u16) | (self.rx(1) as u16) << 8;
 
             let size_with_crc = (self.rx(2) as usize) | (self.rx(3) as usize) << 8;
@@ -158,6 +163,10 @@ impl NetworkAdapter for Rtl8139 {
             self.receive_i =
                 (self.receive_i + 4 + size_with_crc).next_multiple_of(4) % RX_BUFFER_SIZE;
             let capr = self.receive_i.wrapping_sub(16) as u16;
+            // Release fence ensures the buffer reads above are
+            // visible to the device before the CAPR doorbell is
+            // observed.
+            core::sync::atomic::fence(core::sync::atomic::Ordering::Release);
             self.regs.capr.write(capr);
 
             res
@@ -189,6 +198,11 @@ impl NetworkAdapter for Rtl8139 {
                 assert_eq!(i as u32, i as u32 & TSD_SIZE_MASK);
                 self.regs.tsd[self.transmit_i].write(i as u32 & TSD_SIZE_MASK);
 
+                // Release fence ensures the buffer writes above are
+                // visible to the device before the TSD doorbell is
+                // observed.
+                core::sync::atomic::fence(core::sync::atomic::Ordering::Release);
+
                 //TODO: wait for TSD_TOK or error
 
                 self.transmit_i += 1;