From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "Paul Cercueil" <paul@crapouillou.net>,
"Sam Ravnborg" <sam@ravnborg.org>,
"Noralf Trønnes" <noralf@tronnes.org>
Subject: [PATCH 5.4 27/90] drm/dbi: Fix SPI Type 1 (9-bit) transfer
Date: Mon, 3 Aug 2020 14:18:49 +0200 [thread overview]
Message-ID: <20200803121858.938327468@linuxfoundation.org> (raw)
In-Reply-To: <20200803121857.546052424@linuxfoundation.org>
From: Paul Cercueil <paul@crapouillou.net>
commit 900ab59e2621053b009f707f80b2c19ce0af5dee upstream.
The function mipi_dbi_spi1_transfer() will transfer its payload as 9-bit
data, the 9th (MSB) bit being the data/command bit. In order to do that,
it unpacks the 8-bit values into 16-bit values, then sets the 9th bit if
the byte corresponds to data, clears it otherwise. The 7 MSB are
padding. The array of now 16-bit values is then passed to the SPI core
for transfer.
This function was broken since its introduction, as the length of the
SPI transfer was set to the payload size before its conversion, but the
payload doubled in size due to the 8-bit -> 16-bit conversion.
Fixes: 02dd95fe3169 ("drm/tinydrm: Add MIPI DBI support")
Cc: <stable@vger.kernel.org> # 5.4+
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200703141341.1266263-1-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/drm_mipi_dbi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -937,7 +937,7 @@ static int mipi_dbi_spi1_transfer(struct
}
}
- tr.len = chunk;
+ tr.len = chunk * 2;
len -= chunk;
ret = spi_sync(spi, &m);
next prev parent reply other threads:[~2020-08-03 12:44 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-03 12:18 [PATCH 5.4 00/90] 5.4.56-rc1 review Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 01/90] crypto: ccp - Release all allocated memory if sha type is invalid Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 02/90] media: rc: prevent memory leak in cx23888_ir_probe Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 03/90] sunrpc: check that domain table is empty at module unload Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 04/90] ath10k: enable transmit data ack RSSI for QCA9884 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 05/90] PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 06/90] mm/filemap.c: dont bother dropping mmap_sem for zero size readahead Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 07/90] ALSA: usb-audio: Add implicit feedback quirk for SSL2 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 08/90] ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series with ALC289 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 09/90] ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus G14(GA401) " Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 10/90] ALSA: hda/realtek: Fix add a "ultra_low_power" function for intel reference board (alc256) Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 11/90] ALSA: hda/realtek - Fixed HP right speaker no sound Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 12/90] ALSA: hda/hdmi: Fix keep_power assignment for non-component devices Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 13/90] IB/rdmavt: Fix RQ counting issues causing use of an invalid RWQE Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 14/90] vhost/scsi: fix up req type endian-ness Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 15/90] 9p/trans_fd: Fix concurrency del of req_list in p9_fd_cancelled/p9_read_work Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 16/90] wireless: Use offsetof instead of custom macro Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 17/90] ARM: 8986/1: hw_breakpoint: Dont invoke overflow handler on uaccess watchpoints Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 18/90] ARM: dts: imx6sx-sabreauto: Fix the phy-mode on fec2 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 19/90] ARM: dts: imx6sx-sdb: " Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 20/90] ARM: dts: imx6qdl-icore: Fix OTG_ID pin and sdcard detect Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 21/90] virtio_balloon: fix up endian-ness for free cmd id Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 22/90] random32: update the net random state on interrupt and activity Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 23/90] ARM: percpu.h: fix build error Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 24/90] Revert "drm/amdgpu: Fix NULL dereference in dpm sysfs handlers" Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 25/90] drm/amd/display: Clear dm_state for fast updates Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 26/90] drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl() Greg Kroah-Hartman
2020-08-03 12:18 ` Greg Kroah-Hartman [this message]
2020-08-03 12:18 ` [PATCH 5.4 28/90] drm: hold gem reference until object is no longer accessed Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 29/90] random: fix circular include dependency on arm64 after addition of percpu.h Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 30/90] random32: remove net_rand_state from the latent entropy gcc plugin Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 31/90] rds: Prevent kernel-infoleak in rds_notify_queue_get() Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 32/90] libtraceevent: Fix build with binutils 2.35 Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 33/90] net/x25: Fix x25_neigh refcnt leak when x25 disconnect Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 34/90] net/x25: Fix null-ptr-deref in x25_disconnect Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 35/90] xfrm: policy: match with both mark and mask on user interfaces Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 36/90] ARM: dts sunxi: Relax a bit the CMA pool allocation range Greg Kroah-Hartman
2020-08-03 12:18 ` [PATCH 5.4 37/90] xfrm: Fix crash when the hold queue is used Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 38/90] ARM: dts: armada-38x: fix NETA lockup when repeatedly switching speeds Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 39/90] nvme-tcp: fix possible hang waiting for icresp response Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 40/90] selftests/net: rxtimestamp: fix clang issues for target arch PowerPC Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 41/90] selftests/net: psock_fanout: " Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 42/90] selftests/net: so_txtime: " Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 43/90] sh/tlb: Fix PGTABLE_LEVELS > 2 Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 44/90] sh: Fix validation of system call number Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 45/90] net: hns3: fix a TX timeout issue Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 46/90] net: hns3: fix aRFS FD rules leftover after add a user FD rule Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 47/90] net/mlx5: E-switch, Destroy TSAR when fail to enable the mode Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 48/90] net/mlx5e: Fix error path of device attach Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 49/90] net/mlx5: Verify Hardware supports requested ptp function on a given pin Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 50/90] net/mlx5e: Modify uplink state on interface up/down Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 51/90] net/mlx5e: Fix kernel crash when setting vf VLANID on a VF dev Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 52/90] net: lan78xx: add missing endpoint sanity check Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 53/90] net: lan78xx: fix transfer-buffer memory leak Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 54/90] rhashtable: Fix unprotected RCU dereference in __rht_ptr Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 55/90] mlx4: disable device on shutdown Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 56/90] mlxsw: core: Increase scope of RCU read-side critical section Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 57/90] mlxsw: core: Free EMAD transactions using kfree_rcu() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 58/90] ibmvnic: Fix IRQ mapping disposal in error path Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 59/90] bpf: Fix map leak in HASH_OF_MAPS map Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 60/90] mac80211: mesh: Free ie data when leaving mesh Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 61/90] mac80211: mesh: Free pending skb when destroying a mpath Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 62/90] arm64/alternatives: move length validation inside the subsection Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 63/90] arm64: csum: Fix handling of bad packets Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 64/90] Bluetooth: fix kernel oops in store_pending_adv_report Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 65/90] net: nixge: fix potential memory leak in nixge_probe() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 66/90] net: gemini: Fix missing clk_disable_unprepare() in error path of gemini_ethernet_port_probe() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 67/90] net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 68/90] perf tools: Fix record failure when mixed with ARM SPE event Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 69/90] vxlan: fix memleak of fdb Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 70/90] usb: hso: Fix debug compile warning on sparc32 Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 71/90] selftests: fib_nexthop_multiprefix: fix cleanup() netns deletion Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 72/90] qed: Disable "MFW indication via attention" SPAM every 5 minutes Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 73/90] selftests: net: ip_defrag: modprobe missing nf_defrag_ipv6 support Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 74/90] nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 75/90] scsi: core: Run queue in case of I/O resource contention failure Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 76/90] parisc: add support for cmpxchg on u8 pointers Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 77/90] net: ethernet: ravb: exit if re-initialization fails in tx timeout Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 78/90] Revert "i2c: cadence: Fix the hold bit setting" Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 79/90] x86/unwind/orc: Fix ORC for newly forked tasks Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 80/90] x86/stacktrace: Fix reliable check for empty user task stacks Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 81/90] cxgb4: add missing release on skb in uld_send() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 82/90] xen-netfront: fix potential deadlock in xennet_remove() Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 83/90] RISC-V: Set maximum number of mapped pages correctly Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 84/90] drivers/net/wan: lapb: Corrected the usage of skb_cow Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 85/90] KVM: arm64: Dont inherit exec permission across page-table levels Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 86/90] KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 87/90] x86/i8259: Use printk_deferred() to prevent deadlock Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 88/90] perf tests bp_account: Make global variable static Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 89/90] perf env: Do not return pointers to local variables Greg Kroah-Hartman
2020-08-03 12:19 ` [PATCH 5.4 90/90] perf bench: Share some global variables to fix build with gcc 10 Greg Kroah-Hartman
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