ath9k: Cleanup MCI init/deinit routines
This patch simplifies the buffer allocation functions for MCI and removes unneeded memset calls. Also, a couple of unused variables are removed and a memory leak in DMA allocation is fixed. [ 1263.788267] WARNING: at /home/sujith/dev/wireless-testing/lib/dma-debug.c:875 check_unmap+0x173/0x7e0() [ 1263.788273] ath9k 0000:06:00.0: DMA-API: device driver frees DMA memory with different size [device address=0x0000000071908000] [map size=512 bytes] [unmap size=256 bytes] [ 1263.788345] Pid: 774, comm: rmmod Tainted: G W O 3.3.0-rc3-wl #18 [ 1263.788348] Call Trace: [ 1263.788355] [<ffffffff8105110f>] warn_slowpath_common+0x7f/0xc0 [ 1263.788359] [<ffffffff81051206>] warn_slowpath_fmt+0x46/0x50 [ 1263.788363] [<ffffffff8125a713>] check_unmap+0x173/0x7e0 [ 1263.788368] [<ffffffff8123fc22>] ? prio_tree_left+0x32/0xc0 [ 1263.788373] [<ffffffff8125aded>] debug_dma_free_coherent+0x6d/0x80 [ 1263.788381] [<ffffffffa0701c3c>] ath_mci_cleanup+0x7c/0x110 [ath9k] [ 1263.788387] [<ffffffffa06f4033>] ath9k_deinit_softc+0x113/0x120 [ath9k] [ 1263.788392] [<ffffffffa06f55cc>] ath9k_deinit_device+0x5c/0x70 [ath9k] [ 1263.788397] [<ffffffffa0704934>] ath_pci_remove+0x54/0xa0 [ath9k] [ 1263.788401] [<ffffffff81267d06>] pci_device_remove+0x46/0x110 [ 1263.788406] [<ffffffff813102bc>] __device_release_driver+0x7c/0xe0 [ 1263.788410] [<ffffffff81310a00>] driver_detach+0xd0/0xe0 [ 1263.788414] [<ffffffff81310118>] bus_remove_driver+0x88/0xe0 [ 1263.788418] [<ffffffff813111c2>] driver_unregister+0x62/0xa0 [ 1263.788421] [<ffffffff812680c4>] pci_unregister_driver+0x44/0xc0 [ 1263.788427] [<ffffffffa0705015>] ath_pci_exit+0x15/0x20 [ath9k] [ 1263.788432] [<ffffffffa070a92d>] ath9k_exit+0x15/0x31 [ath9k] [ 1263.788436] [<ffffffff810b971c>] sys_delete_module+0x18c/0x270 [ 1263.788441] [<ffffffff81436edd>] ? retint_swapgs+0x13/0x1b [ 1263.788446] [<ffffffff812483be>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 1263.788450] [<ffffffff814378e9>] system_call_fastpath+0x16/0x1b [ 1263.788453] ---[ end trace 3ab4d030ffde40d4 ]--- Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
parent
c91ec465ca
commit
ea510e4bdd
4 changed files with 23 additions and 56 deletions
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@ -973,7 +973,6 @@ void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf,
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u16 len, u32 sched_addr)
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u16 len, u32 sched_addr)
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{
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{
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struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
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struct ath9k_hw_mci *mci = &ah->btcoex_hw.mci;
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void *sched_buf = (void *)((char *) gpm_buf + (sched_addr - gpm_addr));
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if (!ATH9K_HW_CAP_MCI)
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if (!ATH9K_HW_CAP_MCI)
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return;
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return;
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@ -982,7 +981,6 @@ void ar9003_mci_setup(struct ath_hw *ah, u32 gpm_addr, void *gpm_buf,
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mci->gpm_buf = gpm_buf;
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mci->gpm_buf = gpm_buf;
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mci->gpm_len = len;
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mci->gpm_len = len;
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mci->sched_addr = sched_addr;
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mci->sched_addr = sched_addr;
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mci->sched_buf = sched_buf;
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ar9003_mci_reset(ah, true, true, true);
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ar9003_mci_reset(ah, true, true, true);
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}
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}
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@ -990,14 +988,11 @@ EXPORT_SYMBOL(ar9003_mci_setup);
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void ar9003_mci_cleanup(struct ath_hw *ah)
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void ar9003_mci_cleanup(struct ath_hw *ah)
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{
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{
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struct ath_common *common = ath9k_hw_common(ah);
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if (!ATH9K_HW_CAP_MCI)
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if (!ATH9K_HW_CAP_MCI)
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return;
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return;
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/* Turn off MCI and Jupiter mode. */
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/* Turn off MCI and Jupiter mode. */
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REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
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REG_WRITE(ah, AR_BTCOEX_CTRL, 0x00);
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ath_dbg(common, MCI, "MCI ar9003_mci_cleanup\n");
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ar9003_mci_disable_interrupt(ah);
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ar9003_mci_disable_interrupt(ah);
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}
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}
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EXPORT_SYMBOL(ar9003_mci_cleanup);
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EXPORT_SYMBOL(ar9003_mci_cleanup);
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@ -67,7 +67,6 @@ struct ath9k_hw_mci {
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u32 wlan_cal_done;
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u32 wlan_cal_done;
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u32 config;
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u32 config;
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u8 *gpm_buf;
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u8 *gpm_buf;
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u8 *sched_buf;
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bool ready;
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bool ready;
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bool update_2g5g;
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bool update_2g5g;
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bool is_2g;
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bool is_2g;
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@ -383,84 +383,60 @@ static void ath_mci_msg(struct ath_softc *sc, u8 opcode, u8 *rx_payload)
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}
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}
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}
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}
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static int ath_mci_buf_alloc(struct ath_softc *sc, struct ath_mci_buf *buf)
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{
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int error = 0;
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buf->bf_addr = dma_alloc_coherent(sc->dev, buf->bf_len,
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&buf->bf_paddr, GFP_KERNEL);
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if (buf->bf_addr == NULL) {
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error = -ENOMEM;
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goto fail;
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}
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return 0;
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fail:
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memset(buf, 0, sizeof(*buf));
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return error;
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}
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static void ath_mci_buf_free(struct ath_softc *sc, struct ath_mci_buf *buf)
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{
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if (buf->bf_addr) {
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dma_free_coherent(sc->dev, buf->bf_len, buf->bf_addr,
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buf->bf_paddr);
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memset(buf, 0, sizeof(*buf));
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}
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}
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int ath_mci_setup(struct ath_softc *sc)
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int ath_mci_setup(struct ath_softc *sc)
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{
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{
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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struct ath_mci_coex *mci = &sc->mci_coex;
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struct ath_mci_coex *mci = &sc->mci_coex;
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int error = 0;
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struct ath_mci_buf *buf = &mci->sched_buf;
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if (!ATH9K_HW_CAP_MCI)
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if (!ATH9K_HW_CAP_MCI)
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return 0;
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return 0;
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mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE;
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buf->bf_addr = dma_alloc_coherent(sc->dev,
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ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE,
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&buf->bf_paddr, GFP_KERNEL);
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if (ath_mci_buf_alloc(sc, &mci->sched_buf)) {
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if (buf->bf_addr == NULL) {
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ath_dbg(common, FATAL, "MCI buffer alloc failed\n");
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ath_dbg(common, FATAL, "MCI buffer alloc failed\n");
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error = -ENOMEM;
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return -ENOMEM;
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goto fail;
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}
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}
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memset(buf->bf_addr, MCI_GPM_RSVD_PATTERN,
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ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE);
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mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;
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mci->sched_buf.bf_len = ATH_MCI_SCHED_BUF_SIZE;
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memset(mci->sched_buf.bf_addr, MCI_GPM_RSVD_PATTERN,
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mci->sched_buf.bf_len);
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mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;
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mci->gpm_buf.bf_len = ATH_MCI_GPM_BUF_SIZE;
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mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr +
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mci->gpm_buf.bf_addr = (u8 *)mci->sched_buf.bf_addr + mci->sched_buf.bf_len;
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mci->sched_buf.bf_len;
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mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;
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mci->gpm_buf.bf_paddr = mci->sched_buf.bf_paddr + mci->sched_buf.bf_len;
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/* initialize the buffer */
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memset(mci->gpm_buf.bf_addr, MCI_GPM_RSVD_PATTERN, mci->gpm_buf.bf_len);
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ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,
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ar9003_mci_setup(sc->sc_ah, mci->gpm_buf.bf_paddr,
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mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),
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mci->gpm_buf.bf_addr, (mci->gpm_buf.bf_len >> 4),
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mci->sched_buf.bf_paddr);
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mci->sched_buf.bf_paddr);
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fail:
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return error;
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ath_dbg(common, MCI, "MCI Initialized\n");
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return 0;
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}
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}
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void ath_mci_cleanup(struct ath_softc *sc)
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void ath_mci_cleanup(struct ath_softc *sc)
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{
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{
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struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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struct ath_hw *ah = sc->sc_ah;
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struct ath_hw *ah = sc->sc_ah;
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struct ath_mci_coex *mci = &sc->mci_coex;
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struct ath_mci_coex *mci = &sc->mci_coex;
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struct ath_mci_buf *buf = &mci->sched_buf;
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if (!ATH9K_HW_CAP_MCI)
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if (!ATH9K_HW_CAP_MCI)
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return;
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return;
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/*
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if (buf->bf_addr)
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* both schedule and gpm buffers will be released
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dma_free_coherent(sc->dev,
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*/
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ATH_MCI_SCHED_BUF_SIZE + ATH_MCI_GPM_BUF_SIZE,
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ath_mci_buf_free(sc, &mci->sched_buf);
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buf->bf_addr, buf->bf_paddr);
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ar9003_mci_cleanup(ah);
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ar9003_mci_cleanup(ah);
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ath_dbg(common, MCI, "MCI De-Initialized\n");
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}
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}
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void ath_mci_intr(struct ath_softc *sc)
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void ath_mci_intr(struct ath_softc *sc)
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@ -113,7 +113,6 @@ struct ath_mci_profile {
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u8 num_bdr;
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u8 num_bdr;
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};
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};
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struct ath_mci_buf {
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struct ath_mci_buf {
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void *bf_addr; /* virtual addr of desc */
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void *bf_addr; /* virtual addr of desc */
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dma_addr_t bf_paddr; /* physical addr of buffer */
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dma_addr_t bf_paddr; /* physical addr of buffer */
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@ -121,10 +120,8 @@ struct ath_mci_buf {
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};
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};
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struct ath_mci_coex {
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struct ath_mci_coex {
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atomic_t mci_cal_flag;
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struct ath_mci_buf sched_buf;
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struct ath_mci_buf sched_buf;
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struct ath_mci_buf gpm_buf;
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struct ath_mci_buf gpm_buf;
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u32 bt_cal_start;
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};
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};
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void ath_mci_flush_profile(struct ath_mci_profile *mci);
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void ath_mci_flush_profile(struct ath_mci_profile *mci);
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